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Full text of "CVG Magazine Issue 001"

NOVEMBER 1911 




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SPACE INVADERSr 

TARai , 

Games and Pro 

Pet, Aiwle, Tandy, Knclaip, 

Nascom, Vic, plus many more 

LVE THIS 



mvrtfuTf#ii 



AND WIN A VIC 



CHRISTMAS TOYS 

"'p S-day wonders 

PUIS 

ClffSS ft OTHELLO 
: ADD GRAPHICS AND SOUND 
LfARN PROGRAMMING 

- and much, mticli more 



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ARCADE GAME 




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This mav be the ftrst Appfe II game that Is copied for the arcade machines. 

RASTER BLASTER for the Apple II and Apple II Plus is so technically sophisticated and fun to 

play that it is sure to attract the attention of the big arcade manufacturers. But you can get 

it right now for your Apple. 



RASTER BLASTER 

Video Pinball for the Apple II 
See next month's issue for full details. 



Apple It is a rftgiM«r«d trademark of Apple Computer, lite. 






CONTENTS 



No 1 November 1981 




Trjf to ihink oJ «om«thin9 mor« o^x citing ihan a computer. Whot did you 
com« up witht A trip up thu Amazon, icoriiig a gosl I Of Eogland^ landing 
on Mart or. irioyb*. bftcrUng th« bank at Monl« Carlo? 

A compuC*r will giv* you *h» chanc* io do ony of these la your own 
Uvlng room. 

And if you cam* up with lomv mor^ LUIcit vxcltemvnt^ tli*ii p«rhap« you 
■hould b« put in touch with a bualnevamqn [ m«t who Bttndfl hi^ progromi 
out in plain brown wrapp«rfll 

SuFpni«d7 Than COMPUTED & VIDEO GAMES Li tho magninv Io lell you 
juBl what you'rw m lining out on. [f you hove alr*ady diacovtrvd conipu1«rs 
you will know ihol !h«Jr ofily Umitation Is the programmer ■ imagination -^ 
COMPUTER Sr VIDEO GAMES ii out lo pu«h your i magi notion to in hmiti. 

ThiB magasins la putting th« acceni l&rmly on tb« ' gam«B" Bid 9- Wv or* 
not commenting on computen a a hardware, but aB a mvani to an end — 
and (hat end it •nlertoinmerit. 

ThlB iB the age of the microchip ond H you ore not making !he mOBt ol il^ 
COMPUTER Si VIDEO GAMES aim* lo ihow you how. 

Whether you UBe chipB in pub and arcade irideo gameB. buy them In toyB 
I OF your children, pipy through them on o TV video games centre, or boir# 
ibein hidden away ItiBide your computer, we will help you to make more oi 
them. 

tn return we will be looking for some help from you In Bupplying views, 
ideas and — moit importantly — games listings lor us to print. Page 6& has 
more details on how to send In copy and the reword b we are offering. 

We want you to get the most out of these listings thot you possibly c^cttl. Bo 
don't just turn over poges which aren't featuring your particular machine's 
Basic. Instead, look to see bow other people hove gol around problems 
which may have ball led you and if a game interests you then try to convert 
it to your machine^ 

Our Down io Basic page won't only teoch beginners how to use this 
language but compare each machine's Basic functions and show which does 
each job on each machine. 

II there are any terms yau don t understand turn to our iotiware glossary 
{pages 97 and 9S) and you should find an explanation there. 

Dotted around the magazine are the Bugs — you'll meet fbem officially on 
page SS- We've already fallen in love with theee creations from the pen ol 
Elphin Lloyd -loneft and we hope you will too. Vm sure they would like to f^fi 
me now in offering you a big welcome lo COMPUTCH It VIDEO GAMES. 






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ISSUE ON SAlf NOVBMBIIimi 



\J^^ Not just a computer but a wtiole 



Adda Gompyleis Ltd., a Eiiajor supplier Qt corFipuEL'f i;y&lems 
o tnduslry and tjysmess, have opeoiH) (he Vic Ceriue m 
W^si Lomton H^e you can s««, discyss and iKjy everything to di> w^th 
iiie new VIC 20 pemonai cofnpui^r— in person or by rnarl Hardw^fe, 
software, len^ihnicai advice and informaiion is available from an experif^ncod 
staff o* ^Mpfrris Evefi if you alreatJy owr^ a VIC 20. ger on out mailing list te 
hnflw a&oui new d©¥elopmerns, Rem&mb&T--^vmrYlWmQ tias the backir»{] of 
Addii^^ repytattort. and ihero is a full 12 montti warranty on all i^ardware 
Thi» Vic Centre is easy to feaiCh— Ju&t off thfiA40, close io ^fo^th Actci^i tube 



expandable system 

AT ONLY eia9- 95 inc.VAT. Special cassette deck 
£44-95 ific.WT. 

\i\K lf^^.. x.> >-. .] u^ii;r Hedged, ea^y to-ys^ compuier Ms Ihe core of 
a great e^ispandabie systeni^ with lull-sl^e keytkmrd operaijon. 
FtrsMimo ysers can work tt immediately *ith ptug-in program 
cartfldgea, usmg your own colour TV to qei up tn ?4 noiours on 
screen, and three different sound tones -^ vn prog rams 

m BASIC Tne ViC 20 I6i$ you bytW a sy ind budget 

dictate. You can expand its memory lo 32k i PUg-m 

modoleaK arrd transfer data to e^ternai ^tora So the VtC ^ i 

IS more t^an jusi a petsonai ComputerLand >t^ bybtem mi\ expam; 
to put It e¥en luriher ahead. 
VIC 20 Oot Aialrix Phnfer 

traT^ior rired, 80 character peNine, 30 ehaiaclefs per second pNnter. 
E229,95*idVAT 



Cyji^inc^ VAt 



^tC-flS232 INTERFACE 

FyJiy I milium* n led ^Irucit Ittv^l*! 

Bl NRECTtONAi JNTEftf^ACE 

Alldwi V4C l-Q motk *•■ ' 
[> ITT* n Ofsifn^ Daisin^ ■ 

PU' -EC 

F£ ■ 'im uTiit cootuns master ^mm 

3uyy: f f*'nu\t iwppOfti Vic's Own :&u|ID(y 

di^Hiiff 0fhw5, tj^hi Pm^K Pfinifiti Bic 
VICMEMOftV 3K 

Sm«ii s^m-^km teii irMffieiy ex^amiiefi. 
Pfygi inttf ^*c «nfi rtpnxluoaa invnory CWft 
Can b« ul4<f with orh«t «ipiA«jkona Ot««« • 
total of ^ uMrf ilBhc fAmtm v#c. 
f EAtUPlE f Nil tKNud allenMffl Vit vo rmw« 
&iAJq to litgin «l 1(^4 [P>*0i^ i» in Pfll. 
jn^ tfh|lbl» th« ui« ol HIQH RESOLUflOftf 
00 LOU W GR A PHICS £40 ZS tnci VAT 

VIC-TOOL KIT t?a 7S .rci VAT 

For tiK9M «tvo krycm i«3t Kit oo Pot «« fWtt 

h*w« S4im« lAcilitw* iffi ViC 

Rftmimber. Auto. Ai»p«cKi ale 

Thit may b« U44d *i|ft m* »l*C*i VIC Rom 

Swuicti eodfd 

VtC ROM SWITCH BOARi;^ E40_ti im:» VAT 

Afi inai£|Hini4ir« unil \hh4cti plUQi din#Ct CM)i lo Mi^mory 
Expanshp^ni RtMi of ih4 viC dmraikKw} IP14 kns^fiiofi of up 
to i ROMS for gam«9 oaclts or looihit si^d«. «tc 
^£ATURE Simpl« iofiwarft ^i«rlch ONCtian^iaa aach pair ol 
f^MS inEo VIC •» ROM $pice aiioifrinig cl&fthJfiQ ROMS io be 

FEATURE f*fbi{7kn zero lorpe fockoli ara avaitabia a« optional 
aiirai 10 tmip niiminita ^n dtfi^ao* ^o vaiuabMn ROMS 

tfHMIS A^D CONDITIONS A» gov^ SOKT aubftcl tO A<3di 
IfrffTis arid cori0ition^ &i &ai^ Full dttilli «viM£ik>l« 
OA r«Quir«|, &yl ir^ludr / day moniy tmck ctMfanti*. A4cll 
13 montti tiw4w«ro li^arri^tr. PkrMm aHOw 2tM)ri 'or l»ftliv4fy 
APkMv 7 {iayf loi pwraooai cN«qu«i ¥0 b# daarad Ouotti^ 
pficam aft inckittiw qt VA r 



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flan me*d«5 or 
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.it kt^i^^j^d eniry 
iij prDgrain and «aty Io inM 
@U M«tiyt*l«iK^ Norfe'Riev&o«rtl tfilry 
T»acnri<nQ Oanw^ 

f=EATUR£ lou£li »riiitlv4i Enlar cofitacti 
to a4jimioat« »ccHJ«fita>l etvi/r 

V^CCamaft Port Ad«pl«f Cabia 

A . lor tor u[|# wilN bdlh' 

I „ L.Kina A rmiat ror trv»« 



t*'i ASificli VAI 



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VIC JOYSTICK 

Hand Hold ^ioritthr^ uf^ilm tor QVTMn yaa . 

iivai'l{it»ii! m Pi»'- :ii Ci^lt^yrat^eri 

N 6 I? £^4r»gl«^. iJtN, m\ a E^tt 

u nip^r^ mmi i i f^'^.r « tl4.ti I n«l V AT 

Le Stick E30 75 mcl VAT 

Ttw ulhiniitv j ■ "'^^ tiami«d mueti-directionai iuo«r 

s^n&itiv^ AticH- ' m hifi tlutton 



VIC software Ea^h 0I these tapes E14.§S in<:l VAT 
CodaUre alifef rC odafnalitf 

^av piii. ^1 '■ .1 it>fe VtC @4avai you m thit coi^ptil«rtaiOii 

if^riit'i' •' M I- ii-nnind 

ViC SaawotlK VIC Trap and Boyi^i^oui 

3 tun gam-^* ^ c.^.r,-, v'.'h- ^h---* rjuT. -8 i»*l li*# ViC »fM3 »n 

old lavUL^ in«s. #Jth dHtaitnl ihiU tavqin 

Merta-tar h^ r 

A Kyn gan ^nd aoynit and a m#nl4l ^iMti^nn * 

\9Arnm^ t; ■ bf firvr^oni! iiv# hniNf %hjjnifv\ ii r> 

Harder thdfv v^^u I'iluK 

MA ft ORDER |€>. Adda Out'^nAif^. : tm^Km3. FRCEPOSr UK«d(in 
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01 99(2 9904 ouQlma ¥Oui BARCLAyCARDOR ACCESS 
ni|inCM9i 






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Cirda nm. m 



COME DECEMBER 



SOLVE THE CUBE 
THE MICRO WAY 



If you are sttll 43 billion movBn 
away from solving the all- 
conquering Rubik Cube, the neMt 
issue ol Computer & Video 
Games m a must. 

We are publishing a compuier- 
iged solution to the puzzle which 
captured a nation's imagination. 
So no matter how much you've 
^ctombled the six colours, fust 
feed the cube's Ictyoui into the 
microcomputer and it will pro^ 
vide you with a simple step-by- 
step solution. 

And if our free puzzle is caus- 
ing you nightmares we'll be 
showing you the four mats put 
together in o way you may never 
have thought to see ihem . . . sol- 
vedl 

But if you're busy tiying to 
work out a computerised solu- 
tion and win one ol our VIC- 20 
computers, perhaps you should 
skip that page. 

Among our games li&tmgi is a 
seafaring IhriHer Round the 
Horn, which recaptures the spirit 
of the ha^^fdou$ races around 
Cope Horn by the American 
clippers of the 1850s. 

Triggered by the discovery ot 
gold ai Sutter's Mill in Ckiliior- 
nia- the speedy clippers rushed 
passengers and freight from the 
eastern coast to the west — sail- 
ing around the entire southern 
continent on their way. You can 
relive those pioneer days when 
the fastest ships could name 
their price. 

Plus; Mini Golt, Chomp. Goal 
and rnany ciiore listings. 

Also in our oh so seasonal 
December issue we will continue 
ouf invaluable guide to the mic- 
roprocessor controlled toys and 
gomes which you and your chil- 
dren could be playing with on 
Christmas morning. 

Don r buy that toy until youVe 
read our ruiidown of what to 
expect from it. 

The new year also promises to 
be an exciting time m the arcade 
games world with a new genera- 
tion of machines due out. Make 



sure you keep up to date with 
your local screens. 

The next three arcade graphics 
creatures lor our Taito spoce 
invaders competition. And a sec- 
ond chance to enter our arcade 
player of the world finals. 

Our first look at how to pro- 
gram that increasingly popular 
game ot Go. another look at 
improving your programming 
skills with Down to Basic and 
Practical Programming, 

All this plus our very di/fereni 
free giveaway template competi- 
tion. 

Make sure of your copy!! 





SUBSCRIPTION 
^ ORDER 
iltiia. FORM 




scrip: . , . 

^^^^^ Vitieo GamGB and contmue to" 
ji^^ send it to me until 1 cancel 

( understand thai I may stop my subscnDtfon 
a1 any lime and you will relynd me the ditferencr 
I r^nciose a cheque/PO for £10 00 fUK' "" 
I ? 00 T W6 1 ve i 5S u e s a yea r Cheq u es s hi 
payable to Computer & Vjdeo Games Lid 

Name . 



Address 



Signed „ 



Oaie 



NOW PLLAbL POSl TO: 

Cam purer & Video Games Ltd.. 

Subscriplion Deparimenl. Bretlon CourL Bfellon. 

Peterborough PE3 802 



COMPtfTER i ViDEO GAMES S 



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ELECTRONICS FOR THE 80'S 



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ZX81(16K) GAMES PACKS 

These games are designed by Video Softwdfi^ LSki diiJ 
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with an accornpanving commentary to teacti you how 
to use the program. Programs are wfinen in standard 
Sinclair BASEC with no machine code so you should 
be able to add your own variations 
All games pacics are priced at £3.95 to include VAT. 
post and packing. 

'•indicates games which wIN run on ZX8Q wilh 8K 
ROM. 



To: Vidao Softwar* Lid , Stona Lana. ICinver. 
Stciuftindu*, WmI Midlartdt. DV7 &EQ 






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COMPUTER i VIDEO GAMES 7 



TRS-80 SOFTWARE 



FROM THE PROFESSIOIMALS 



SHUTTLE 




Thil program is a nignly accurate c^fnpumr s^mu^alJoii of th# fiighi €^\ itm Spacs Shutlie Columbia from the 
Inhiiai oounidown tftfOugh the launcti p«rJod, tha launch rise if afid mio a Mabia orbkl The crah may be 
manofiuvrad vwMhin iha orbit and than droppcFd ogi to linaHy lly through theatmoaphar^ lo asafa toucjidowr^ 

The attraction of this srmytation is Us authenticity So far as is possible, it fo^^ows the actual paramelefs of ihe 
firai Columbia t light wilh only on# or two mfnor except mn$. The shuttia. ot course, starls its flight pomle^ 
vanfccally Jnio ih^ sky and carriea a huge fue^ tank to provide the fuef (or Its three maiin engmm in &ddl^^on to iha 
sofid fuel rockets which pro vide tha major thrust m lift it oft the ground. Two minutes into the flight thefockeis are 
jetiisorved. having burned ail their fuel The count-dowo for take off slaris at T-20 Mconds At T-lO aaconds the 
shuiile motors star! firing. Dut the shutue remains leth^ed uniii T = When the shultla blasts oft. the pilot myst 
guide iha craH into its orbit t>y coniroMlfig ris atiriude and track A number of guidan«ce controls are suppUect. 
togelhiir, of course, with control ol tho shultle molors' thrust .. 

The skmulaiJon may besiaf ted at one of three points in time: either at take oft. at a point where the Columbia 
IS in a stable orbit round the earth, or finally, prior to landing Measurements of speed, tuel antf io on may be 
seiected for either Metric or Imperial measurements All of the physicaJ forces which acted upon the actual flight 
are taken into account One departure from fact has been included In that the two aoHd fuel rockets b^ve had thetr 
thrusts increased from 26 to 36 mi^Hon Mewtofis so as to give the pilot an increaaiad latitude for error, in other 
words to make the lake off easier 

A fascinating program, the more So because ^t follows fact so closely Available tor the Mode; I and 
Model Ml TRS m. Model I and Model M Genie and on tape or disk. The tape version will run in 16K, ifie 
diskln3ZK 

Tape version,..,.. ,,.,,....EIS.fS Disk version. .£ir.t5 

Both inclusive of V.A.T ta^Mlt plus 50p P 4 P Clf ordered alone). 

Tfl&M & VIDEO GENiE SOFTWARE CATALOGUE ei 00 fretundable] plus 50p postage. 

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TEL: (04241 220391 /223A3A TELEX 8973$ SOTEX O 




ClKta H#. IM 



8 COMPCrmi & VIDEO GAMES 



TRS-80 SOFTWARE 



FROM THE PROFESSIONALS 



k^< 



>!#HRF0(J| 



WEL 



^ 



We are pleAsed to b« al)i« lo annctunc« th« t^mmentmmmii of a nevv sarkis of Adventure games The urins 
n^ffi^ 'tsAfm^tiQM Advtfilufw ■ s5 wriUen in machrne language by S Ho^artn. an English aulhoi The firtt 
episode Js en|ine<3 "TneGoldfsn Bjilon" Th« scenario "^ Ihal you have been seni by I he ruler of yoyr own land lo 
a strange pfovince wilh the missmn o* discovering m^ #h«rmboy1i of lh« l«g«fidify Golden Bato-n of FerrenuH. 
King of I he Ancient Eiii Kingd^^m Tne b«ton mysteriously disappeared Mv«ril years ago and ^hiin others i%av« 
y#niured ta i^m land m an atl^rnpi todlscovef a, none nave returned to te^l Ihe^r lale! 

The program follows what has bet^me the normal atruic*yfe lor Adventure programs tlfie Ihe ortgin^^ mam 
frame Ad vent y re, direct ion$ can be dee«gn«led ty jyst f he first letter of the com pass pg^nt and cof<nmar»dft m^y tie 
optionaJJy entered wiih just ihe hrst ihree lelter? of the appropriate word As usual provisiofi it m«de for sivmg 
the Q^ne at any aiage arid »uch standard commsnd$ m Help, ^nveniory, Score arvd Quit are aM available 
Expfif leno&d ad venturers win inevJtaibly draw corh pan sons betw#tn mis asries and thai ol Sostt Adams, so we 
wJil leave il to them lo make thetr judgements' The only comm«nl mat w« wHI make m th*? time it fhat we find il 
quite invigorating to play an Adventure game by a dirrereni author as obviously they construct their stories 
Sitgfitfcy difterehtly Mysterious Adventure 1, * The Golden aaron is available on CMMtte fOf TflS M or Video 
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16 COMPUTER ft VIDEO GAMES 




TAPmG THAT 
SINCLAIR PROBLEM 

Dear Sir, 

Sinclair claims that the ZX81 
will accept a tape input from any 
cassette i^coidei with either a 4 
ohm Qr a ohm output. This may 
be trite but for ^otne re^ason 1 
have found it impossible to 
re loo d my own programs once 
they have t^en recorded Why is 
this? 
Puzzled, 
London N7. 

Ouf resident expert replies ^ 
Most portable tape machines 
theee days have two sets of 
inputs and outputs. One sel will 
be a 5-pin DIN standard socket. 
This may be used to record from 
the ZX81 bu! cannot be used to 
reload. The other set will be m 
pail of 3.5 millimetre jock sock- 
ets. One will be for the micro- 
phone and marked ''MC and the 
other will, hopeiully. be the 4 
ohm or B ohm output This should 
k# used to load programs. 

To begin with 1 had trouble 
loading programs into the com- 
puter once I had recorded them^ 
For some reason I was using the 
§ame side of the jack-to-jack 
plug lead supplied lor reloading. 
Only when I swapped them over 
to the other lead did I realise thai 
one side was an open circuit, so 
check both belore throwing your 



THIS if m pipt of opportunity^ Well 
iitsd in (im itiftgsiifie with plenty et 
mmn lor iKpaniion and soon to 
have lots ol exciting placss for 
icr^en-iiieid eyes lo visit 

With a liltie building up tfie 
views ihould be good as well. 

II you have a homalati letter 
bubbling up irtside you or even a 
whok lamily df torrespundenct 
looking lor a nice area to settle. 
Why ftot $eiid them along to m at 
Maiibag and we It do our best to 
Had a pood fceme fof ihem. 

Problems, comments, ideas and 
ftven criticism can find a place 
here. If you are interested please 
drop a Itna to: the editor. Compuler 
& Video Games. EMAP, Ourrant 
House. 8 Herbal Hill, London EC1R 

Wat! you didnt have much 
chance to write to ut before this 
lirst issue so we put logether some 
letter ol our own, by asking the 
North London Computer Club for 
two ol the problems ihey have bean 
faced with and then providing 
answers to them It was all a bit 
too easy so we hope you It test us 
some more in the future 



^a->^t.N 



.ij out oi the Win- 



dow! 

Sinclair euggest that if you 
cannot get the program to enter 
you should vary the volume level 
until the 23(81 accepts the signal* 
Once you have pressed LOAD 
and RETURN the computer will 
wait forever or until it gets a 




signal it recognises so you do not 
have to hurry it you have a long 
enough program on the tape. 

H you are able to load a prog- 
ram but find it corrupted try turn- 
ing the volume level down as 
this may be distorting the signal. 
Also check the state ol the bat- 
teries, if you are using them. or. 
preferably, use a mains adaptor 
if you can. 

INFURIATING 
KIT CLANGER 

Dwxi Sir, 

One of the most Infuriating 
mistokes I have seen with kit 
building is incorrect component 
insertion. 

Not only are components in the 
wrong places but they ore also 
put in the wrong way round. 
While excuses con be made for 
components with uniecognis- 
oble markings e.g. cap<:tcitore^ 
diodes or transistors, they can- 
not be made for chips especially 
when bcKirds dre marked with 
the layout. 
Angry. 

North London. 

Our kit correspondent repllea: 
1 loo have found a problem with 
chip Identification recently 
which has. made me look again 
at the subject. Most good kits or 
sel I -assembly boards are sup- 
plied with a good diagram indi- 
cating the correct position of 
each chip. Some, however, do 
not and just specify the end or 
comer with the "dot" that corres- 
ponds to pin 1. This, in some 
cases p is not enough. 

Most chips are coniigur^ as 
shown below. This shows a cut- 
out. A. a recessed hole, B* and 
the "dof \ C. Pin 1 is clearly indi- 
cated by the "dot'% C- In figure 2, 
however, C is omitted and the 
recessed hoie^ 6. could be mis- 
taken lor the 'dot'. 




HG.l ^IBT 

The safest method i have 
found IS to combine A and C to 
indicate the top of the chip and 
depend on either if the other is 
missing. Pin 1 is then always to 
the left if the chip is pin down on 
the table and the cutout. A« 
and/or the "dot", G, are away 
from you. 



COMPUTER ft VIDEO GAMES 17 





WIN A TAITO 
SPACE INVAttRS 
OF YOUR OWN 

I mag me having a Taito spcice 
ill va dors machine of your very 
Qwn^ It could b0 the centrepiece 
of your living room or plugged 
iFito your bedroom. 

That is Ihe marvellous prize 
which Taito has kindly put up fof 
the winners ol the Know your 
Creatures Competition 

The arcade game industry lec- 
ognises spoce invaders as a one- 
of I success and it is convinced 
there will never be another game 
like It. The way it caught peo- 
ples imog illations make il a 
classic of its kind. A success that 
no amount of new machines, will 
ever repeat. If you win this prize 
you will have more than just an 



enthTaUing game in your livmg 
room but a slice of the wot id s 
leisure history 

Do you remember that first 
game ol space invaders? It was 
probably back in 1979 when Bri- 
tain I if St went space invaders 
crazy, I can recall struggling 
with the tactics oi this bizartf? 
game in a South London pub. 

Without any idea of whether it 




Do you know a space invader 
from a galaxian? Or can you tell 
on Asteroid spacacroEl from o 
PhoeniK one? 

If so then you could find your- 
self owning <t Tailo apace invad- 
ers machine. Anyone who knows 
his pub and arcade game 
machine characters will be in 
with a chance of showing off a 
space invaders table to visiting 
friends. 

II you con put a name to the 
three creatures shown below 
then you will be well on your 
way to having that prize in your 
living room, 

Alt you have to do is wrile 
beside each picture below whot 
machine that particular creature 
features in. For example if you 



think the first creature comes 
from a Puck man or Maze man 
machine, then write eithei word 
beside him — we will know what 
you mean. 

Then dnswec the quesiion 
below in not more than 25 words 
and cut out this section of the 
magazine but do not post it yet. 

Hang on to it I For in our 
December and lonuary issues 
there will be another three 
graphics characters and then 
anothei three. When you think 
you hove all nine then send the 
three sections back to u^ 

This gives you time to hunt 
around your local arcade it there 
is a creature you are not sure of 
and moke certain of the right 
answer. The first correct answer 
picked out ol the hat will have 
that space invaders table. 



was worth shooting the flying 
saucers that sooied across the 
top of the terpen or whether 1 
should go for the space invaders 
on the ^ge, or that bottom row, 1 
was wiped out long be lore the 
first wall even looked like being 
cleared. 

Feeling certain I could 
improve on my meagre score I 
was already reaching for thot 
neit lOp befoie I noticed that a 
good number of coins had 
already accumulated on top of 
the machine and that half the 
pub was lined up behind me 
waiting to have o go. 

1 1 is a meaBuie of just how 
addictive space invaders is that 1 
scouit^d the pubs (or another 
machine tor weeks. 

My dream then was to have a 
space invaders machine of my 
very own, so that I didn't have to 
wait tor a free machine in pubs 
or keep travelling up to the bar 
for my change. 

Now (or one lucky reader, 
Ta:lo — the name behind the 
original Bpuc^ invaders craze — 
will make that dream come true. 

With such an opportunity, you 
could soon be rivalling the top 
scores of the video game world 
champions. 

For details of the Know Your 
Creature Competition* se« 
below 



KNOW YOUR CREATURES/1 




4pi 



B 




Name 
Addles 



Telephone: 



I THINK SPACE INVADERS PROVED SO POPOUR BECAUSI: 



For details of Computer & Video Gomes competition rules see page 2D. 




THE LATEST, AND INDEED THE GREATEST 
OF THE KANSAS ARCADE SERIES 

ARCADE SCRAMBLE 

Don^ wasft yotir time pliiyrr^g the simple slarts to the Big Five games — g^c slratght into the heavy action 
with thfs brand-new mulii-aciion, home grown Arcade' game 

Ve^p it's the famous one of tlie Arcades, and Ehe first time it's ever been schteved on a connputer 

No! that easy though, far wilhoiit warning suddeiily there's a squadron of enemy fighters heading straight ai 

you heit bent on your deitruGtion. Then comes the ack-ack flung at you from ihe ground batteries to add lo 

your difficulties^ and there's the cluster of blimps to make things even more difficiilt 

But the real nasties are the rockets, which the enemy blast at you, without warning, from the ground 

m Italia I ions. 

Even if you manage to 0yt'$hooKp oui-fight, oui-manoeuvre that little lot, you still have the mountains to 

negotiate which is a problem witti the fighters streaming through the only avaHable space. 

But with this really unbelievable game, you have no less then six different controls at yoyr fingerttps, being 

able to move your bomber forward, backward, up end down, whilst at the same lime both fmng your guns at 

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And not onty do you have infinite control over the bombei", bMt the ground and enemy in$tallalions 

continuously unfold below, with valleys and mountains actually moving across the screen, giving an hilherto 

yndreamed of realisrn. 

The installations include rocket launch pads, ack-ack batteries, forts, munition dumps and fueJ dtimps, You 

do your damnedest to destroy these as they unfold below, so building up your score. 

The famed Mike Chalk who created Arcade Invaders and U-6oat Strike, has learned up with Chrts Smyth to 

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COBfl^UTEH ft VIDEO GAMES 11 





II you me blasting more go lax- 
ions per I Op them cniyoii^ else 
down y^our local . . . Isn't it about 
time you display^ this tal^^t to 
the world? 

Whatever your tavounle 
mochina. s^nd us in your best 
score and you coutd iind your&elt 
hailed as the Beat Arcade Gome 
player in (he World, 

In corij unction with Taito Elec- 
tronics wB are trying to Iind the 
be&t go ]ax] an- blaster, puckman 
muneher . oisteroid annihLlalor or 
invader halter going — and give 
him the oeclaim he is due. 

The compelition is very easy to 
enter, simply turn to the reader 
reply card between pag^g 82 and 
B3 and fill it in. You will {ind o 
section of questions on arcade 
games which will give us a bet- 
ter Idea of what you want from 
arcade gcrnies and we, in turn, 
con help manufacturers we come 
In conlact with, to provide those 
sort of gomes ^ 

Nesft (ill in the mochine you 
wish io enter on and take the 
card down to your local pub or 
arcade- Put the best score you 
can on the machine, ask the pub 
or or cade owner to sign it and 
send if off to us. 

Should you iind yourself pro- 
ducing Q disappointing score 
simply try again- 

If, ofter you have sent the card 
off, you lum in on even better 
score, don't kick yourself but just 
buy the next issue of Compufer & 
Video Games and there will be 
another entry form in there. 

The highest scores on the 10 
most poputor mochineg will 
appear in our ilr cade Action sec- 
tion to give the re$t of the arcade 
world something to aim at. 

And the three top scorers on 
the three most popular machines 
we hear Irom by 1 January will 
be invited to take port in our 
Grand Arcade Game Final. So 
don't hide that expensively- 
obtained talent under a bushel 
«» tell the world about iL 








Can you solve the tantolizing 
puzzle attached to our front 
cover? 

There is a solution (you moy 
begin to doubt this alter the first 
three hours), but only one. 

The aim of the puzzle is to set 
out (he four cords in a close 
approKimation of a square so 
that two sides ol each cord lie 




COMPUTER & VIDEO GAMES^ msny 
tree competilioni are optn to mv- 
one ixcipt EMAP emplOYeei tnd 
their relatives 

Enlriei to our Mind Roulinei, 
Nevvra Ci ess word Know Your 
Creature, Fris Puols PfOfram, 
6mm ef tht Year inil Arcailo 
niftf of the UVorrd compttitiom, 
ihoyld he »n1 to: COMPUTER i 
VIDEO GAMES. Dyrr«nt House, 8 
Herbal Hill, London EC1R &JB. 
Judges deciaiofii are final and na 
i;0fr#spondineecan beenterad into^ 

Send entries to M^nd Routinti 
on a postcard and in all cases 
please incliide a name, address 
ind, where possible, a phona 
number — so we can let you know 
thoifld you tiave iron. 



against one side of two others. 
See the photograph above. 

And the (our ploces where 
these cards meet myst oil match 
up. That sounds easy enough 
until you actually start work on 
the puzzle and Iind thot never 
more than three sides deein Io 
motch^ This is where your mic- 
rocomputer comes in. 

li you can write a program on 
whatever sort of machine you 
own — or just ordinary Basic — 
Oiad send it in to us beJore 13 
December then you'll be m with 
a chance of wmning a Common 
dore VIC- 20 colour computer. 

We hove three to give away to 
tne l»st programs that come in 
before that date. 

We have a program to solve 
the pu22le which wiH be printed 
in ouf January issue. But for the 
very frustroted we will be show- 
ing o solved puzzle next month. 

A panel of three judges will 
sill through the programs you 
send in and if yours is one of the 
best then a VIC'2Q compute; will 
be on its way to you. 
Warning: Trying to do this puzzle 
without a computer using the old 
fashioned trial and error method 
could result in hours of frustra- 
tion. 



20 COMPOTES A VIDEO GAMES 



Make the most of your 
Sinclair ZX Computer... 

Sinclair ZX 

software 
on cassette. 

£3b— per cassette. 



The unprrccdcnred popuJariiy of 
ih^ /Ji Sciirs orSinclAir Penonml 

volume nf pmgram* lAtltlcn hv uscm 

Sindiu liaib undertaken to 
puliliih thr mofi! clrgsmi oriheie 
on i>re*rccordcd cassette*. Kach 
p mRum ii carefully veiled for 
1 mere it and i:|uaJirv', and ihen 
Kiottpcd wiih other progrtins lo 
(dfm a «in^t~subiet:t cai-seif c. 

E^ch cusfiJtte eoiits £1.95 
< infltidirsf VA7 and p&p imd cnm^s 
ctimplctc with full instructions. 

Al [hough primarily J£^lgnt^d 
for liic SiiKtiir ZX8U many cjf the 
cȴictttR ajc ^ujLabk for running 
on a SizKlau- ZX80 - if fm^d wiih ii 
replacemcnr 8K BASIC ROM. 

Some of the more clsibniuic 
progivns can hr nun only on a 
Sinclair ZX P^ertonal Coniptiter 
■uxEDentcd by 1 16K-byiie add-on 
RAM pack 

This RAAl pack and die 
rqtlvceiTitnt ROM ^rt descnbcd 
lido« And the description uf each 
d^etir makc!^ ii dear what 
hardv. citt i^ rei^uired. 

gK bask: ROM 

Thf aiv bask: R<)^^ mt4 in the 
2X81 ti availst^le in ZX80 o^^ntrs 
m i dtof^iJi repbcemtnt chip. 
With the exception of anunaird 
gnphidr lilt the advan^red fearufic» 
of me ZXBl are ni>w dvnilahle on a 
SCSO-inchidin^ the ^hiiir^^ lo mn 
tnochof the Sinclair ZX Soft ware. 

TIk ROM chip come* wiih a 
fKirkt[3ft)€Hid Lemplatc^ which can 
bt oird^d on the e:(i?:iiiig 
hiybmfd m mmutt^ and a new 
opcmmg nmnu.i1 

llK-BrrERA.\lpack 

The l6K-b>te RAM pack pr^^v ide* 
lA-tfiites^iCife mernnr^ iji i>ne 
cocnpletc module. Cumpatibk wiih 

iir pipgfsm storage mm a datahucu 

Tfee RAM picl simply plug* 
into the existmg e¥paT»k>n port on 
the rctr of a Sinclair /X PerMinal 




Cass^tt^^ 1 - Games 

R ASIC ROM) 

ORBIT ' your spice cmlfi 
mis^^ion i*^ lopkkup a very valuable 
car^o that's in orbit afi>und a aiar, 

SMPER^yod'ft furrounded 
by 40 of the enemy, How quickty 
e$n ymj &pot and <ih(>ot thrm when 
ihcy appear? 

Ml-rTEORS ^your ^rar&hjp 14 
cm tsi njj th rough space w hen you 
meci a mcieor Ktorm. Ho^ lonf can 
you dodjse the deadly danECr? 

LI Ft - J. H ConiA^y*s Xramf* of 
Life' hai achjeved tremendous 
popularirk^ in I he cTom puling world. 
Smdy iht life^ death and evolution 
pirtem^iifcellH. 

WOLFPACK^ ymif naval 
d«ttckyer is on a submanne h unt. 
The depiJi char|£<% ate armed* bi^t 
muf£t be fired with precision, 

(KH-P- w-hafs your hand lira p^ 
ll'i a tricky coufi>€ but you dimtrol 
the i^Tcngih of your &hots. 

f^ =fc 2 -Junior 

3 ioni 7-ll-ycar-0]di 

i aifh J6K tt4M p^i 

UK^v^K -simple aiddibofi - with 
the added attraction erf a car cnuh 
ifvougei ii WTong- 

MLITIPLY -Fonjs mulD- 
plication with five levels of 
diflTu-ijlty If the answer' it wrong - 
the dilution i* explained. 

THAIS' -itiuh J plkaiiiin trit^ 
apinf^t the computer. The winner's 
train reached ibe iUickin (irit. 

FRACTIONS -fractions 
c^p lamed a I three levels of 
difficutty . A ren^iiuestion sett 
completes the pFogitill. 

ADDSUB- addition and 
sublr^ction uith three levels of 
dilTtcutiv A^in^wfOMamwcii 
■re foltowed by an expTiittdon. 

DtVlSlON - wnh five levels of 
diHkuliy. MiAiakestare explained 
graph icalLy^ and a nmnuig m^at ii 
displayed. 

SHaiJNO - up 10 SOO word* 
mer five levels of difficult' . Ymi 
cane^en change the wordi* youj^Jf 

Casicttc 3-Buiincftfii and 

Houi$chc>td 

Lt.i.i L'ili.JAi.-^etupy«irowii 
uniipuKHAed telephone directory 
.irul jJdrtrf^bocik. OiangeHi. 
J J Jfiums and dcletiotis oif up to 
^0 eninc?! ^reeaav. 

KOTE PAD^a powctAik awy- 
tQ-mn system for storing and 



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rctneving evei^-^day infnrrnjiuon. 
Use it at a diary^ a cutaJoKue, a 
reminder sviiem^ or a directory, 

B/\.\KA{:aurKT-a 
sophisticated fmanaal recording 
tyilecn with comprehensive 
dncumentation. L^iie it at home to 
keep track of 'where the moflcy 
goc%' and at work for expensesi 
depanmenrat budj^ets^ etc. 

Cassette 4-Gaiiiei 

PurXXSi (amd AX80 crriA 8K 
BASIC ROM) a^d IbkRAM f^^k 

LUNAR I jVNDINC i - bring ihc 
lunar module dciwn from nrbit to a 
toft landitig. You coot ml atii tude 
and oibita) direction -but wi^h the 
fuel gaupe! The "iCTecn displays your 
flil^ht status diM^ialJy and piphicalli'. 

TVt-RNriTONE-a dke version 
of RJackiack. 

(lOMBAT- you're on a fuidde 
^pace mission Vou have only 12 
mis^ile^ but the aliens have 
unUmitcd strriiglh. Can you lake 
L2(3fthcm With you? 

SliBSlTUKE-on patrol^ your 
frigate detectmapack of 10 enemy 
suhft. On you depth -char|;c them 
bcfcjre ihev icjrpedn Vuu> 

COrellRRAKER-the 
C!impuief thanks of a 4-di^ number 
which y<iu have to guem^ m up to 10 
tries. The logical appruach is be^t! 

AtA\lMY - in an^w^ toa diures-s 
call. yoii'Ve narrowed Aown the 
search area ih;» 343 iiibic kilometers 
of deep space f-an you find the 
astronaut before his lite-suppon 
lystcm faili in tO hour« timer 



(i;a*tsettc 5 -Junior 

Ilducation: $-ll->caf-oidl 
t'WjtXSI fund XXMI mtk HK 
BAStCROMj 

MATHS -tesE^ arithmetic with 
three le%<els of diflkuliy^ and pvt^ 
your score out of 10. 

BALANO-: - le^is ujndemMdiig 
of levcn/Mcmm theory witfa a 
series of graphic exam plea, 

VOLC\yiS-ye^'ufnd^ 
anawers from the computer lo a 
scries of cube volume caladatioiia, 

AVliRAtilii> - what^ the avefafe 
height of your data? 'The average 
shoe si^e of youf fiimty ? The a veme 
pocket money of your friends? Tne 
"Oi^puier plots a bar chart, and 
dJsiiMMi*hes MEAN fmm MEDIAN 

Bases -convert from dectnul 
Cbasf 10 J lo odief b«fe»af ;mir 
choice in the rmn^e 2 to 9. 

nLVlt'-Vcilumei, tempetattires 
-and their ctiTnbinationt 

How td order 

Simply U4C theiirder form bdowp 
and either enclose a clie«)ue or pve 
us the number of fOur Acceis, 
Ka relay card or Tmiicard accsunL 
Please allnw 3*J days for delivery. 
14^av mnncv^ck opimn 

sindaii— 

2X SOFTWARE 

SlnctBir Roiearch l4d, 

i ICinn Plifsde^ QunbiHdiEe, 

"~~lSN.Tth«276««l(M. 






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Sinclair ZX8I Personal Com 
tlie iieart of a system 
tliat groMTS witli you. 



1980 saw a genuine breakthrough - 
the SirvclairZXSO, world's fii^t com- 
plete personal computer for under 
£100 Not surprisingly, over 50.000 
were sold. 

In March 1981. the Sinclair lead 
increased dram at tea fly For just 
£69.95 the Sinclair ZX81 offers even 
more advanced facitities at an even 
lower price. Initially, even we were 
sufpfised by the demand - over 
50.000 in the first 3 months! 

Today, the Sinclair ZX81 is the 
heart of a computer system. You can 
add 16-times more memory with the 
ZX RAM pack The ZX Pnntef offers 
an unbeatable combination of 
perfomnance and price And theZX 
Software library is growing every day. 

Lower price: higher capaUDty 

With theZXer it's stilJ very simple to 
teach yourself computing, but the 
ZX81 packs even greater working 
capability than theZXBO. 

It uses the same micro -processor, 
but incorporates a new, more power- 
ful 8K BASIC ROM - the grained 
intelligence* of the computer This 
chip works in decimals, handles logs 
and trig, allows you to plot graphs, 
and builds up animated displays 

And the ZXSl incorporates other 
opefation refinements * the facility 
to load and save named programs 
on cassette, for example, and to 
drive the new ZX Pnnter 




BASIC manual 







Higher spec^icatlon, fower price * 
how's it done? 

Quite simply, by design, The ZX80 
reduced the chips in a working 
computer from 40 or so. to 21. The 
ZXB1 reduces the 21 to 4! 

The secret lies in a totally new 
master chip. Designed by Sinclair 
and custom-buitt in Britain, this 
unique chip replaces t6 chips from 
the 2X80! 

New, improved specification 

• Z80A micro -processor - new 
faster version of Ihe famous Z80 
chip, v/idely recognised as the best 
ever made, 

• Unique 'one-toucK key word 
entry: the ZXSl eliminates a great 
deaf of tiresome typing. Key words 
(RUN. LIST, PRINT, eta) have their 
own single-key entry. 

• Unique syntax-check and report 
codes identify programming errors 
immediately. 

• Full range of mathematical and 
sciefitlfic functions accurate to eight 
decima! places. 

• Graph<Jrawing and animated' 
display facilities. 

• Mulli-dimensional string and 
numerical arrays. 

• Up to 26 FOR/NEXT loops. 

• Randomise function - useful for 
games as well as serious Applications. 

• Cassette LOAD and SAVE with 
named programs. 

• 1K"byte RAM expandable to 16K 
bytes with Sinclair RAM pack. 

• Able to drive the new Sinclair 
printer. 

• Ads^anced 4-chip design; micro- 
processor, ROM, RAM, plus master 
chip - unique, custom-built chip 
replacing 18 ZX80 chips. 





Kftorbuilt-irtuptoyoyl 

You' I! be surprised how easy the 
ZX81 kit is to build: just four chips to 
assemble (plus, of course the other 
discrete components) - a few hours' 
work with a fine-lipped soldering iron 
And you may already have a suitable 
mains adaptor - 600 mA at 9 V DC 
nominal unregulated (supplied with 
built version) 

Kit and built versions come com- 
plete with all leads to connect to 
your TV (colour or black and white) 
and cassette recorder 






/ 



16K-byte RAM 
pack for massive 
odd-on memory. 



Designed as a complete module to 
myQurSinclairZX80orZXB1,the 
RAM pack simply plugs into the 
existing expansion port at the rear 
of the computer to multiply your 
data/program storage by 161 

Use it for long and complex 
pmgfBms or as a personal database. 
Yet it costs as little as half the phce 
of competitive additional memory. 

With the RAM pack, you can 
also fun some of the more sophisti- 
cated ZX Software - the Business & 
Household management systems 
for example^ 



Available now- 
the ZX Printer 
for only £49.^ 

Designed exclusively for use with 
theZX81 {and ZXSO with 8K BASIC 
ROM), the printer offers full alpha- 
numerics anti highly sophisticated 
graphics. 

A special feature is COPY, which 
pnnts out exactly what is on the 
whole TV screen without the need 
for further intnictrons. 



ilndaii" 



ZX8I 



e Klii«» Pitatf*. Cvnbnchi*^ Cwnta., 082 tSN. 
Tti: fOaTS) M104 ^ 2t2i2. 



At last you can have a hard copy 
of your program listings -part icy larty 
useful when writing or editing 
programs. 

And of course you can print out 
your results for permanent records 
orsendingtoa frfend. 

Printing speed is 50 characters 
per second, with 32 characters per 
line and 9 lines per vertical inch 

The ZX Printer connects to the rear 
of your computer - using a stackable 
connector so you can plug in a RAM 
pack as welL A roti of paper (65 ft 
long X 4 in wide) is supplied, along 
withfuHinstructiorts, 



How to order your ZXB1 

BY PHONE - Access. Barclaycard or 
Trustcard holders can call 
01-200 0200 for personal attention 
24 hours a day, every day. 
BY FREEPOST - use the no-stamp- 
needed coupon below; You can pay 



by cheque, postal order. Access. 
Barclaycard or Trustcard, 
EITHER WAY - please allow up to 
28 days for delivery. And there*s a 
14-day money-back optron We want 
you to be satisfied beyond doubt - 
and we have no doubt that you will be. 



It^ : SIncltIr ll«u« rch L td, FKtPOVT 7, Cwnbrliioa. Ce2 1 VY . 



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n PIftflse tick 1 f you require a vAt f ©ceipt TOTAL £ 

*l enclose a chequ^/posral crder payable lo Sinclair Research Ltd, for £ 
'Please charge to my Acces^BarcHaycafdnhjstcard accoynt r^o 

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BAnif OF THE 
PREHISTORIC GIANTS 



8ee-m baci; to pretii&tDric Umes 
when thi! land wa$ cove-red in 
swamps and ternfving dmosdurs 
touoh! blMdv tolttfls 1Q I he 
dea^h 

That us the seitmg fcr one of 
the games avaiiable lor Tandy's 
iatisf machin^e, rha TRS80 Col 
out Lomputef Called Dinowars 
Ihe 30 ^mt is for two players, 
or one pliyer agamsE th« compy 
lar. 

Wh«fi yOM swilcl^ on the com 
ptitaf — Tandy promisas it Mil M 
available this month — a pair ol 
dinosaurs tiasti yp on Ihe scraen. 
One li red. ttie oitrnt b\itB Each 
of Ihe beasts »s cone rolled by 
a joystick and can be moved 
backwards, forwards, to the left 
anrf right The piclure Qft tNs 
screen rur^s around so that Che 
mor^steis can tivalk oM ttio screen 
at one edge and reappear on liw 
other side 



Wilt^ leiils awishmg Ihe two 
dinosayrs leap ferouously into 
action when the button on the 
joysticks IS pressed. Then ihe 
light to lh£ death fa«gins com 
pie til With gruesome laund 
effects 

The ptay«n hav« W man- 
oeuvre I he If monsters tnCp a 
good posiEiDn lo kill each other 
J<^ do that they have to plant a 
tethal bite on the back of the 
mtk II the dinosaur di^s from 
Ns wo y nets he literally drops 
dtad in front of y^ur eyes. If i 
monster dies the player m con 
irol of him toses 10 points. 

One ynu&ual feature is that the 
diiTOsaurs can be killed when 
they are off the screen As you 
can t actuaaly see what they re 
domg II s more a matter of luck 
than judgement It costs C22.95 
and IS available Irom your local 
Tandy store 



TOWERING 



Thfjy ^ay theie is no smpke with^ 
out fire and in Towering Inferno 
It IS truer thin ever 

Recently produced for t^- 
Sharp MZ 80K by Sharpsoft. Ihi 
game is definitely not for the 
squeamish The object is to fm' 
your way out of a multiston . 
bu^ldmg which is on its way t; 
being gutted by hre 

The only way out is to gt 
down to the bottom floot — yiau 
are stuck on the 10th storey ^ or 
to go up to the roof of the 
buildmg 

There is no time to panic on 
yOMt escape As you make your 
way from one floor entrance 
across the room io the exit you 
have to |udge the quickest way 
to avoid Ihe fast spreading 
flames Voii control a man with 
the cursof keys and have an aer- 
ial view of eMh hoor. 

If you are no\ carefiil wfvQre 
you tread you might find yourself 
overcome temporarily by smoke 



fum^:^ ',,n-:n that happens the 
man under your control d^sap 
peafs from the scteen for a sec- 
ond 

tf you manage to reach the 
roof 11 IS not certain thai you will 
suf¥rve tt^ ordeal. With luck a 
hehcopter will swoop down, 
dropping a rope ladder to whisk 
you away. 

If you reach the bonom and 
emijrga safely, an ambulance wilt 
dnve to tt^ buildtiig and take you 
away to recouperate m hoip#tal 
It costs E:5 81. 



EMTOR 
8E EATEN 



An addictive r^ew Pet game wtll 
keep you glu^d to screens tryirm 
to avoid taft moving monsters. 

Avid tans of the Ma;remafi of 
Putkman arcade game, who also 
happen to own a Fei. wilf be 
eager Io try this rather different 
version in their homes. 

Called Super Gloopei. the 
obiact IS to gobble up as many 
monsters as you can. A difficult 
FOb bedkuse ttiey move very 
qM>ckty and can turn on a heel 
suddenly while you are m hoi 
pursuit of them and wtttKiut lieii^ 
Ution wtN eat you up. 

The hectic chase takes ptace 
in a fmiw with points being 
scored for swallowing up dch!s 
atong the path and for mon iters 



wNch you catch up wrfh and 
nonage to devour. 

The Gioopf rs travel that much 
hsier than you can go and the 
game has beefi written m 
rnachine code to give it extra 
speed It »i avadable from Pet 
software supplier Super soft, 
costing CSOO 



24 COKPtrrEn&VIDEDGAICS 




PERIL ON 
THE SEABED 

Not for sh# t^au$lfophot>*c. S^a 
We^lf f^cmm^^ ihe perils qf sub 
maririiF wtrtere complete wrth 
miots lufnbOfig ^tt Ifie d«tki of 
enemy deiuov^ori 

At war wiih an enomv lliet the 
comfiwider of ihe submanri^ 
mufi shooi itown ships sailing 
ibov« him on tfiree difffiron! 
Iev9l£. Cottour^d purple, nd and 
whit« the ships ere wofth very 
IRQ number of points when they 
are luccessfullY desi roved 

Each ship moves at a ditfsrem 
pAce. the histesi ones ^iltng at 
the mp of the screen fartlhaat 
awav from the submarine making 
If more diffKiuJt to get a direct 
hii Use a lOisbtk^ to move th$ 
subntanne and the bMon to fire 
an ufiiimited supply of torpedoes 

There are i^o levels o1 ptay 
tor begrnners and expert $PKiot 



H/wm 




ers, The submarine cammandei 
IS Bring egamsc the clock wNpcIi 
ticks avyay from* 60 seconds 
fkNm A mmute has neyer gone 
so quickly 

But the commantfer has to 
keep 1 Wiry eye out for des 
troy^r miMS teleased by enemy 



shipping These hover in ihe s€a 
blocking the path of torpedoes If 
a torpedo hits oria fay mistatie it & 
a wasted %hoi Don t ^^orry too 
much aboyi the rriines becayso 
they cannoi sink dmrn to your 
level in ihe sea 

The stirps sailing at the loiMSt 



level (cQlourtd white) art rhe 
slowest ni0¥ing and the easiest 
targret They are only worth hvii 
poims ftt skilk lavek on« or to 
pom IS at (eve I two. 

lye lit up MB smallef ihtps 
which {ravel mote qyicHy The 
red ships are worth more points, 
IS at iev^) ofie and 25 al level 
Two 

And rutin B the waves it tt>e 
top of the screen are iht pnal^ 
lest and fastest ships m Iht flMl. 
They up along, bariiy fivmg ttia 
submarine commander timt to 
lake aim let alone fire These 
purple coloured sli^ps icoro 50 
r,f.| one* and 60 nevei two I 
i Y ^f^ the ones to go tor to 
boa SI YDui Mort Once ihe wSfs 
reaches a magic BOO tfie tim« 
iimrt IS extended givmg you 
scope m shoot do^n more ships 

The esEtras needeif are a |0y 
stick, the g^me is supplied by 
Adda Completer's VIC Centre. 
The cassette with Ivwo other 
garner on it costs t14 96 



CHESS ON 
THE CHEAP 

Computerised chess game^ have 
now raactied Christmas stocking 
prtcts with the faunch oi Acet 
fOntc I Electronic Chess 

Retiilmg at only £24%. it 
compares very favourably with 
oihif cfmm games on the mar 
ket which can set '^m back ai^- 
mmq yp !0 fSOO And it includes 
i lot of tNi standard features you 
would exptrr 



Thy console looks like a poc 
kei iaiculator with a liquid crystat 
disphay ^nd keys representmg 
the pieces and numbered 
squares of the board. 

But ydu will mod to provide 
youf own board and pieces 

Only !wo levels dt play but the 
Electronic Chess owner can 
choose to play black or white, or 
— if he Wishes watch an 
instructive game with iN com 
puter playing against itself 

It will tell the player if he made 
m ill e pi move and can delete 
the move he made wrth a cancel 



key, It ^IsO aNows the player u> 
verify the positions at any stay> 
during the game and program in 
optfiing variations usrng a spe 
ctal key 

Diher teat y res mtlude soHing 
up and removing individual 
pieces and piacmg a game posi 
tion from wfitch the computer 
will cofiiinue to play. 

This offers a good game to ihe 
keen chess youngster who il 
short of an oppor^ent and will 
help him improve hi$ standar<} It 
will also hi inio most family 
budgets 



GO FOR 
REAL GOLD 

One computer game destined to 
fallow the success of Kit Ihom«' 
treasure b&Qk Masquerade is 
Gottfmsh 

Masqyerad^ was the book 
which be^me a best-stHflr by 
afters g cluti to a £5.000 piece of 
lewelliery m the shape of a hare 
Since It first appeared m^ny 
ueasifre huniers have dug up 
various stately homes and 
searched numerous river beds pn 
Hit mistaken bekef ttui they 
have sotved the clues Mni will 
fifid the treasure 

V^ether Mr Micro's VIC gime 
Goldrush will keep rts payers, 
guessing for as lang. we will 
faave to wart and see — but theie 
IS no shortage of interested peo- 
ple waitmg to try solvmg ttie 
problem. 

The prfie for ihe win nor is real 
gold nuggets piovideil by Mr 




Micro 

The game is an Adventure 
type based on the 1943 Cahfor 
man go^ rush P^rticipanis start 
trekking across to California with 
a nymber ol dues to be foynd on 
the way Once there, you have to 
stake a datm and try to find the 
Golden Word. 

first person to get in touch 
with Mr Micro With the correct 
word wms [he gold. 

A review appears on page IS 

Coming soon for the lyst 
released Commodara VIC 20 is a 
variety of new games incltiding 
versions of Puck man. the popular 
arcade game. Gala»iians. Cosmic 
JailbrealK Spece Invadeis Md 
Moon Lander These were 
scheduled for release m October 
al Ihe earliest and wtll be 
covered in more detail in future 
issues 



HNGER ON 
THE RUTTON 

Polaris it Ilit Tandy version of 
rhe popular arcade geme Mts- 
lila Command 

The player has to protect 
cities Iroiri an onslsughi of bil- 
Ifilic «i 113.1 las. aljon space aMpa 
«Rd olhtr amra^ltfrasirial 
beinfs Saving the cities from 
obJJifliatJen is in your hands — 
you contief ihe gr ootid base 
wrllirt nnli-faellisik missiles are 
liMnbad. 

Polaris is designod to rim on 
ihi TRS-BO models but though 
ihe game s concept rs en citing 
witfiout titb colour graphics 
aval tab la on arcade games and 
other microcomputers, it Still 
loses a toi of itt ettraction H is 
also eipeefive for a ciimpuier 
game ai £27.95 so only keen fans 
ol the original are likely to 
spend thai amount of mmiiy on 
It 



DEATH AMONG 
THE STARS 

An a&iion pa^^ked space game 
which looks set to N a scorching 
lucetis is Starmmes 

It first reacfied Apple sci^ens 
m the States and h^ iust been 
released in the UK Take com 
msnd of a sttrshrp fighter on a 
mrssion in the gaiavy to defafid 
your own civilisation from the 
threat of mvtsion 

Yoy control the stafshtp f^ng 
through hyperipace dodgmg 
attacking miss^fef. m^tiorittS, 
and small spaceships all Oui to 
get you The action ts fast and 
you tarely have time to press the 
tire button to e»nerminate ait 
ahijn ship before a shower of 
fOLks falls at the speed ol light 
towards yo^ur ship 

To hit Ihe obiects you must 
line Ihem up m your sights afid 
press Ihe fire bytton 

The game follows m the Star 
Haiders and Space Battle vem. 
retails at ri4 9% 




proouctsjM m^ 



wmmmmmmmm 



jriTj^r 




m0^ 



Trasd wsnly to $Jive your skrii 
when sfQu are playing Mi4iBf>eJd. 
one ot thfi kai^st games a¥3ib3bt& 
far thB Ao^m Atom. 

In this B^fTie ititroducEid by 
Leeds sottwart supplier Program 
Power, the on!y prp! action is a 
metal dilecior in pick out the 
mines 

The minerieid sprtads across 
ihe screen with the one sate 
p«tch being your home square on 
the far side of the field 

On iNe same tape, which co^ts 
CSJi^eri two Of her Atom games. 
Snake end Awan The hrsf is a 
vefiAtton Qit the barriers tvi>e 
tiame Two serpents grow in 
length and Iht oi^ett is either to 
cyt off the opp^smg make, or 
make his $mike cross over itsetf 

In the Atom vifsion. the ser- 
pent 1$ trapped m a square box 
which has electrilied wells 
Numberis iash in the bm and the 
make has to gobble up as many 
as pDSsibli^ If he touches the 
wails. Of doubles back and 
toiiches ilserf, 50.000 voHs ere 
shgt through hts body Uke most 
Of these games it proves I g04»d 
lesi of ioui reaciian^. 

The third gemt is another 
computeri$ed vtraion of an 
tnciiiit African pebbte game. 
Awiri. A strategy game lor thm 
kers. the obiect is lo win as many 
pebbles from your opponent as 
poss^bte to dommaiB his tern 
tjsn^. 

Each player is giveii iije pits on 
which ihty place hts pebbles 
Then m turn iht pebbles are 
moved ai^cording tp certain rules. 
The gam# Fmishes when one 
player has put his stones on the 
Qppofi^ent'3 territory 



p£4m, 



Appfce fawners are inviteit lo dice 
With Oeelh as apposed to Life m 
i new game from Leisure Genius. 

This new strategic game is 
based loosely around the compu 
ter classic, Lite, and m wives 
building-up cells untit you can 
dominate your opponents by 
deslroying them through d^sfup 
tion of their cell structures 

There art 10 cell structures to 
play With end from which evolve 
your own universe. 

Ea^ch piayer starts with a slock 
of ceils which they can choose 
before the game kjcks-off. hrst 
you have to decide how many 
cells each player is allowed and 
then select the structures you 
.want to pley With 

Also take mip consideratton 
how quickly you want ttie cells to 




THE OPPOSITE 
OFUFE 

generate and the number o1 gen 
eraiions carried out dunng the 
multiplyinii period It is lor the 
players to set the geme rules 
Another opiion ^vailabt^ is 
sound 



EXECUTIVE CHESS 



A fiew chess geme is out lor the 
dedicated enthusiasi at the top 
ei^d ot the Chess Challenger 
range 

This versiofi's attributes lie in 
its design and the capabilities 
and scope lor play 

Ther^ are 10 levels ot ditlkully 
which the player selects going 
right tfom begmner to expert. So 
the Decoratof Challenger' can be 
used by inexperienced chess 
players as a iearning tool but still 
give a good fame to dub players 

A book comes with the game 
which lists 40 different chess 
dpeningSp with approximately 
12DD book opening moves prog- 
rammed m. The Decorator plays 
either black or white and is c^p 
able of repeating a El the positions 
of the pieces left on the boerd at 
any. stage of the game al the 
pres^ of a btittori in case the 
player's memory fails him 

If the player gets stuck ifie 
friend^V Decarator wili Btitomiii 



cally suggest the best move the 
player can make by doing a quick 
assessment o1 if^ pieces posi 
tions 

This delude chess pme is a 
lull si/e board concealing ihe 
eieclfonics and micro processor 
but with an attractive playing 
surface It is made ol hardwood, 
sieified to obtam ihe light ar^d 
dark coloyrs The pieces loo are 
made ol the ^me wood and c^n 
be stored in containers next to 
llw iHard. The calculator styied 
keyboard console is also on the 
same sect^n. 

Th^ whole unit stands m a 
carved Frame wjth four small 
leg^ 

But It 4f expensive, se Fling at 
the moment tar the grand price 
of 096.K. Included in that pnce 
ts a booklet ol opening moves 

It IS marketed m the UK by 
Computer Games and is deh- 
nptely the ejieciilive computer 
chess set 




The rules of the game are 
complicaiid and therefore take 
some geitmg used to bui once 
you have decided exacliy what id 
do and ihe condmons necessary 
for ceils to regenerate ihe game. 
It IS difficult to stop playing 

Conditions for rtgeiieratioii 
must be three cells next to an 
em ply space in that space i 
new ceN will pop up so you can 
literally see your empire grow If 
a cell h«$ two or three tet4 
positiomd raxt to it, that cell cs 
safe and will syrvtvi, but if it hm 
fewer thafl two or more than 
three ihe cell cannot cope and 
will shrive) and dlt. 

The two players fight it out on 
the screen, each placing cells m 
des+red positions ¥ou can move 
the cells into any poiition on tiie 
screen, the idea being to gtl 
tfMm in tlie proii«r place to see 
them regeneraimg 

11 demand I abtolyte concent 
ration to keep trick of your celb 
iind these of your opponent the 
i^enafaiion cycle begins when 
both of you have finished pEacrng 
your cell structures 

Once you have teirnt how Xo 
play Death you can vary the 
fevels m6 m tensity Of the gam« 
w^th the selictjon controls 
Made by the London based firm 
Leisure Gemirs, you get your 
money's worth lor €15 

TWO-IN-ONE 
SPACE TRIAL 

Two popular ercadt gimts, Mis 
sile Command and Asteroids 
have been cpmbmed to transfer 
to the Pel screen. 

Called Meteorites, the aim of 
the game is to protect seven 
bases from a swarm of meteor ^ 
itfti descending from the 
heavens 

The only way to survive is to 
blest the rock showers with yoyr 
laser gun^ but you will hnd th^l 
often it serves on^y to shatter 
the meteorites into even smeller 
yet |ust as deadtv frag 
mams 

Altogether you nave to hght- 
ofl Sill waves of meteorite 
storms, scorkig poi^ita on the 
way for each hit Othif hazards 
to avojd Bt^ aJttn ships whch 
swoop down liiier mitten tiy to 
fire at The bases under your pro 
taction Shoot down one of those 
and you score boi^us points 

Meteorites is from the 
Harrow based hrm Super so ft 
who also supplied Hachhikers 
Guide to the Gata^y addicts two 
months ago by producmg a P«i 
version of the Doug lies Adams 
bMk and TV sfnii.. 



26 COMPUTEH * VIDEO GAMES 



? 




^ 



OF ALL the mnumerable ggnies 
appearing on computers, large 
and small. Chess is one of the 
Tew which has a genuine exis- 
tence in the same form outside 
the computer environment- The 
history of the ancient game cov- 
ers many hundreds of years and, 
indeed- among the first books 
ever printed in English ^ by 
Caxton — was one on Chess, 

The success of computers in 
making in-roods Into the com- 
plex field of intellectual 
endeavour has been remark- 
able, with the best programs 
now performing at a level to 
which f^w regular club or 
county- lev el players could ever 
aspire ond beginning to cause 
problems even for escperienced 
masters. 

Exactly what has been 
achieved p and what h<is not. will 
be one of the perennial topics of 
this series. In each issue I hope 
to include a combination of his- 
torical and background mater- 
iaL together with up-to-date 
reports on tournaments — par- 
ticularly microcomputer tourna- 
ments — and product report s^ 

The idea of a chess -playing 
machine has a long history- 
pre-dating that of the electronic 
computer by many years. An 
automcitic chess ployer built in 
i769 by the Hungarian, Wolf- 



By Max Bpamer 



gang Von Kempelen. was 
demonstrated to the court of 
Empress Maria Theresa of 
Austria two centuries ago. 

Th e out om aton ch ess- pi oyer 
was built in wood in the form of 
the upper portion of the torso of o 
man* approximately lite'Slze 
and dressed in the clothing of a 
Turk, complete with lurban and 
cloak. The figure was seated at a 
cheat on which a chess-board 
wos placed. Before each game 
the doors of the chest were 
opened to reveal a complex col- 
lection of gears I pulleys and lev- 
ers. 

During the game thd OppO« 
nent s moves were made on the 
board in the usual way, with the 
Turk's moves being played by 
itself with its left hand. 

Needless to say. Von Kempe- 
len's Turk was no more than an 
elaborate hoax, with o man hid- 
den inside the chests detecting 
the opponent's moves by means 
of magnets and working the 
Turk's arm by means of a panto- 
graph, while being confined to a 
small area lit by a candle. 

Even knowing of the hoax, the 
Turk remains an e^clremely 
impressive invention. Not only 
did the public demonstration 
appear to show that the whole of 



I Th« i«€Diid wdrld micrttcampuUi 
{:hsmpiQrt$htp was held in Wvsl 
Girmany in September, under thi 
iuspice« of both the Intemalional 
Camputer Chass A$$ecialion {I CCA) 
and the Intemational Chess Fed e ra- 
tion IFIDE] 

Here is the decisive game bet- 
ween the first and second priie 
winners from the (ir&i world mie- 
recomputer championship, played 
in London last Sepiamber. 

t P-ltlP4t3; It QXQcMWH; 

2 P-Qi P Q4: tl. fl-Q3, 6 02^ 

3. N-QS3. B NS; 13^ 0^0. QR HI; 

1NC5. NQ83: 14. QRNI.BBI; 

5 Q^N4, P4{IO; 15 B-KRe, R(81NC1; 

6 N-B3. P^B4: li KR-Kl. N KNt; 

7 D Nl BXNch. 17 M-Nbcih, K-W; 

8 IPXB. KftMQ; II BHl. P-KHS; 

9 Q^B&, KB2- 13 N-R7. K'B2: 
to B-KNS. QrBl; 2« B-B6. HXB. 



2t 
22 
23 
24 

25 

2S 
27 

21 

3(1 

31. R (N1 

32. K-B2. 



NIM. WK: 
PKM. P-H3; 
P"fl5. P tCN4: 
P'N3. P-n3; 
P-8J. N'fll; 

P IM. P N4. 
K-N2. N-B5; 
BXN. QPXB; 
PXP. PXP; 
P 05. EHl: 

I QV B^BI; 

PM; 



33. n-ClN1. P-B3; 

34. PXP. n-QU: 
3i K-m, B fl3: 
3i H^Ql ftXBP; 
3? PHlch. KlCl; 
3S N-B6£ti K B1. 

39 H-Qb. R QR2; 

40 PftTcli, KKl; 

41 N-BBch. K-B2; 

42 P^S Qch. K^N2: 

43 Q-N6cMt'Bl; 
44. mi m«tt. 



^ 


Jll 


T 


i I« 


& 


1 ': i 


5 


t *: 1 1 1 


4 


1 t 




^ ^ 


3 


Jl ii „ 


2 


m B^'^ 


1 


H " 



P«»jtiiHi ^tr Blncli'i ZMi ni^wi 



the chest was either empty or 
occupied by machinery, bul the 
engineering recfuired to make 
the hoax work was highly com- 
plex, so much so that even those? 
scientists con vi need that there 
must be a hoax found i1 almost 
impossible to explain how it was 
achieved. 

The Turk's s0crel survived 
intact from 1769 to 1834. Twenty 
years later the ingenious crea- 
tion was destroyed by lire, its 
final resting ploce being the 
Chinese Museum in Philadel- 
phia. The story oi the Turk is told 
in lasci noting detail m The Greot 
Ch0ss Atitomafon by Charles 
^£chael Carroll. 





^ 


j& 




^sss^ ~/k^ 


^ 


^^ 1 


i ^- ' 

* 




^ 


^ ^Hl 


^ /*w7A^ ^K^ml\ ^ 


\_} w ,1 1 y \f 



As an incentive to the ambiti- 
ous chess programmer- the 
Fred kin Foundation of Cam- 
bridgep Massachusetts has 
recently established a prize of 
SIOO.OOQ for the first computer 
program to beat Ihe world 
human champion in a match. 

Although the goal still seems 
well out of r«xch, the improve- 
ments made in the last few years 
ore most impressive. The 
purpose-built chess machine 
Belle — much larger than Sen- 
sory Voice Challenger but prob- 
ably still jUBt qualifying as a 
microcomputer — won the woj Id 
computer chess championship 
convincingly in Unz last year 
against computers of all sizes 
and has since attained a perfor- 
mance rating around 2,300 on the 
U.S. Chess Federation scale, a 
very high master rating. 



COMPUTER & VIDEO GAMES 2? 



I 






&C110N 



do yQu go about putttng 
your riame up w Nghls oi^ th€ 
high soait Chart Dt vaur favourite 
mathini? 

Sitart of carrvmg pockets futl 
«t lOg pttces down Ip ypur local 



pub 01 arcade, ^s th«re iny ta&^ 
ler way lo matlir the new vidio 
game which fi as you fiooMed^ 

We ifikfih so and every month 
in our Tips section we will be 
giving advite thai will ke«p 
Computer & Vid«o Games read- 
ers ahead pF the pack on the 
pQfylar arcade garnet of the 
moment. 

Ttie tips will come rmm 
eiperls wh€ have already 
wortied iheir way inside Ihe head 
of the game s prciprammer and 



di^cihrered m$n o' pr«longir%g 
each lOp s woHfi of life from a 
particular maciiirte. 

Np game is evflt ttally mas- 
tered ttui thjs column will give 
practical ideas ic help you sur- 
vive as long m possible agajrist 
the indelati gable creilures that 
imhabM evftry vldio games 
cabinet. 

In this issue we lool at the 
Maieman ~ alsu known as 
Pacmarr and Puckman — tyf e of 
game Whfle nej^l month we will 
otter s&me hints on the diffetuli 
game 0t Asteroids De Uie 



In I his same column ire are 
go^fig lo print machine slang" 
Any terms or ixprtsiions v^u 
and your fnend^ use lo describe 
certain events or creaiions in a 
tame One example is how 
quickly Space Invaders became 
known a% Green Meanies . 

Alsn ofl ttie irrevereni side, let 
us know about any programming 
bugs or a machine. These are 
areas on a game where tJie prpg 
rammers have not loretiiii Mat 
a certain sequence of letlonf 
Witt produce a peculiar res pome 
on the screen Tell us about 
ihese strange happenings and 
how to recreate them 



Tli« "Gttoscs^ ft^ai mhabii the 
Mafeman lype of arcade ni#c;hir>g 
go by many names bul. whatevef 
YQu are in^Jitd to t:a^l ih&m, most 
players find a lew more n^mes tif 
their own 

The fnachifihe ilseif vanes m 
tiMe from Pacm^n, Puckman or 
Picmin to the more descriptive 
Maztrnan But whit ever itm 
name of the mttthmt! you htv* 
been cussing over, the tips to 
help you achieve a high scoie 
remain the same. Here are some 
'hints EQ help vou mcrease your 
ffurt yreld it Ihe botlom of ihe 
screen 

t^irstly It Pi rrnporlant to 
develop m opentng strategy for 
Cht early Walls" laach cleared 
screen generaies a new "wall"! 
Sti*dy the early movements of 
Ihe ghosts and you will s«e that 




Two interesting little program 
mifig (laws can be bund i>n the 
Miieman game If you persuade 
your (nends to devote the money 
for a little experimentation you 
may be abft Ici re ^r dans thenfi on 
a screen 

n IS possible to send an errant 
parr of eyes flilimg around ih« 
area ot screen |ysi abc^ve the 
ghosts base 

This cafi be achieved, some 
times, rl you catch a ghost jiist as 
h% emerges from hit baso and 
eat t^tm This mg^i b^ attempted 
early in i wall, by eatmg a flash 
i^g dot and then speeding io the 
e»l of the ghosis' base, to con 
syme thf ghost a$ he bounces 
out 

ll IS also possible to turn the 
ghosts bright orange This often 
occurs when you eat a ghost ju^i 
as he turns from a flashing blue 
consumable bactc to his norrnal 
colour Of coufse. trying this 
auiqmatically means you lost a 
litf. 




1 BEAT THE IVIACHIWE 



thass oni:y vary it you go vtaiy 
ctoSi 10 tt^m iHpenment to find 
a path which will each time keep 
yoii clear of them for longest and 
finaNy lead you. with the ghosts 
m clos€ pursuit, lo a flashmg dot 

Good t»ps for this afe to clear 
the bottom row as ttiis is the 
easies! pl^e to get trapped Vou 
will only manage to do this in the 
first two walls Then change your 
rout$ fpr ihe ttitrd wall btMl ft ill 
make sure you deaf at least lialf 
of that botlom bne The ghosts 
speed up again for the fifth wall 
so a new opening strategy will 
be iietdtd tor thts one Good 
opening gamfoils teave tiolh the 
riashmg cfois at iM bottom ol thg 
scieen to last — insiiranct for 
the time you get caught with a 
hall Imished wall. 

When yoit come around to 
those fir^i few dots, im patien! 
Key areas ol the screen here are 
[he tumieL through which you 



tr^ivel mg(.h lasteir than the 
Ma^eman ghosis H you can lead 
three Ihrough heie a shotild pro- 
vEde enough time lo tidy up the 
screen 

Another important area rs ttit 
neiwofk el erectly ab^vi the 
ghosts base With a coolhtail 
you can manoeuvre ihts pan of 
the maze with ghosts in close 
attendance and still stay out of 
danger there is also a possibil 
ity of swooping down to swallow 
a fruit when one a;>piars 

When you do hnd yourself 
trapped in a corner, m the top 
ana bottom ot the screen the 
ghosis travel faster than you can) 
a violent change of directioii will 
work wonders. 

If IM position looks really 
hopeless a vigorous shake ot the 
lever cm confus« the ghosts and 
s«nd them oH m diflerenl direc 
imns. Removu dnnks from on top 
of the machine when employing 



Now let me grve you some 
thing to aim for After a run of 
various Iruits worth mow lor 
each wall — a cretCiira I tan o^^ 
describe as a GalaKian^' appears 
on the screen Thus wall, when 
cleared, rewards you with an 
intrtguing Irttle display involving 
the red gTi^st 




A collecifon ot ffiAchine siatHl or 
strange eKpressioni ov«rhttafd 
while watching people play the 
Male man vartely ol game Com^ 
plete with a tikely interpretation 
of Che meaning 

• A monster munch — eating all 
(our ghosts to score a T.KX) point 
bonus 

• An expensive fruit ^ caught 
by a ghost after t>eing tempted lo 
eat a huit 

• Gut them in the nest — trymg 
to eat the ghosts while they ire 
siill inside their base (a rvthei* 
pointless exercise as you cant 
get mi 

9 Fangs m the backside |ot} - 
escaping after a ghost seemed 
certain to catch you 



Cosmic Avenger sends you off on 
a harardous mission, throygh 
space and along undersea pas- 
sages to destroy the enemy s 
secret station 

Among the dangers you will 
have to overcome arc tanks, 
UFOs miFies. submarines, mis- 
sile stations and the task is made 
ever more difficult as you 
apf^roach the secret base 

Ttie game is along this lines of 
Detifider witt^ your craft starting 



Dft on tho lA'ide plains, facing 
jintiHiirc;fBfi fire from guns and 
tanks. 

The enemy's chasa missiles 
are fired from impressive installa^ 
t ions built well off the ground or, 
m the imderwster caverns, fkom 
rocky niches abovt you 

Their missiles will chase your 
cfaff and iheir hit rate ts high so 
beware. UF.Os are anothet 
menace of the air but are equip 
ped With radar to help yoy see 
them approaching. 

In the se^p tfi@ enemy's sub- 
marine missiles and his own subs 
ate just some ot the problems, as 
mines and depth bombs feature 
alofig the route you have to tale. 



Depending on the ma^liciOuEt- 
iiess of your local arcade owner 
you Will find yourself with 3 S 
Jfves and one of four levels of 
difficiiify 



y 




29 COMPUTER fc VIDEO GAMES 







Masttnny (he Om«Qa R3€« wifi 
riiiimbtt you among ttie known 
Oalsxifls' ehid ip^cd fightir 
pilots. 

Rli tlifi training method wts 
invented ongina^ty bv Et^e Omega 
Srai SYStem to maie Ui pilots 
lh« moil r^ap-eclfrd (Ofce i^ouRd 

Sitting in xtm cockpil of your 
cr«ff. the city of Komar pan 
oramicaKly spread bB\<m yau, 
you must engage and d*5iroy ttifi 
indfOid forces and the rninas 
th«y have pianted in your path 

The ptayBr use^ a gytdante 
contrgl knob lo steer hi$ Cfih 
and a thrust button tor force to 
take his crat! m^o the energy 
field M the alien droid fleet and 
It I mifiei ffti youf screen, pres- 
ling I he fire button send* out 
deadiy laser ray^ to destroy the 
anemy targets. 

Photon and Vapor rninei aro 
worth 350 and SOO points riifW^' 
tivaly, Drord Ships brms VOu 
MXR) points and the Comindnd 

Ships i.m 

^ost danprous is the en^my 
Oeith Ship which eppe»r$ at 
nndom and has far greater 
spwd and mtnoiuvrabitity than 
itie resi of the targets its tactk 
IS to blimp and demolish the 
Ofnega Fighter 

ior^us Omega Fighters are 
awarded for high scores and top 
scores are kept on the screen tor 
all to challenge The backdrop at 
this gime. which is distributed 
by Bally U.K. is impressive pyt 
the ship and mm a graphics are 
disappointing by present stan^ 
dardt^ 



^tM 



m^ 



Monsters and magicians bnng 
Fantasy lo the world of arcade 
games m the highty original 
Wkfard of Wor 

It also brings back the ping- 
pong video games idea of letting 
two p^v^rs loose on Che controls 
simultawousty, so ghrinf tlw 
feeling that this game is mam 
agamst man. rather than man 
aganist machine 

It does not dictate that you 
have to hght one another and will 
allow teamwork against The 
strange m[>nsrer5 which inhabit 
the Dungeons of Wor 

Players control a separate 

squaefron of "worriors" — blue or 

yeltow-cjad humanoids dressed 

ill space suits and armed v^fti 

unified heldHiistyrbance rifles ' 

They venture out tnio the 
dungeons, a maze of passages of 
random desigif wtih estipt 
doors af either end. with a view 
to destroying the monsters 
which inhabit the labyrinths 

Th ore are four kinds of mons 
ter plus the Wizard himsetf The 
blue Burwofs are worth lOQ 
points each and si^ of them 
inhibit the first dungeon. When, 
all six are shot, yellow Garwors 

- 200 points and often JnvispbJe 

— and speedy red Thorwoi^ — 
500 pomts ~ |Oin the battle. 

When all are killed the next 
ma/e appaars containmg mort? 




THE FANTASY GENERATION 



m^onsEers to shoot or edi i^ie 
worrH^rs. The opposing wofriors 
are also allowed to slioot one 
another's men for t.OOO points 

This time a Worluk. the 
Wizard's favourite, flies tti rough 
the dungeon when the last 
Thorwor IS shot. If either player 
can shoot this creature belore he 
escapes »t means doulile points 
on the neKt dungeon. 

That may prompt the Wi/ard to 




Ren^emper the evO Mekon^ A 
Irtili green creature with a large 
head who hovered on a saucer 
and was to Dan Oare what the 
Daieks are to Doctor Wio 

WelL a iimiiarly sinister crea 
lure — albeit with only one eye 
-^ turns ^p m the new arcade 
game of Space Fuiy (o instilt your 
plivmg ability, boaii pf the 
superiority of his batlEe forces 
and pne rally give the ptayer a 
dritkult time 



At the eiui of the game he will 
gjye his honest, if patromsmg. 
opinion on what kmd oi opposi 
tipn you provided for him to test 
Ns forces 

The game is similar to a coloyr 
fu4 asteroids except that the 
opposition IS provided by the 
one-«yed moniirosny's battla 
Heer 

Ifiese IS a variety of whirling 
dervishes which are harmless 
until they have loined together lo 
form a larger space craft and witl 
then either ram your own craft or 
fire an accurate orange bomb 
tQwiTdi y@u 

Wh«n you have demolished 
his first collection of unlikely 
looking space ships with yoyt 



own rattier ordinary craft, this 
videci Mekon expresses his sur 
prise at your survival and 
assures you that his neirt fleei 
Will fimsh the |ob 

fine novel feature of the ^me 
is that you are mvited to dock 
Wkth a new spacecraft which wirr 
help you tackle the next battle 

You dock with the craft you 
thinlc best suftid to the next con 
Hicf, 

Plenty of scope lor tactics in 
this gamie so tonf as you can live 
With being described as a 
mediocre or. more commonly 
atftgudt^. o^pi^nf ni 

This Sega pme is distributed 
over here by Mta Electronics of 
Manchester. 



^npaar. teleportrng ai magical 
speed and hurling lighlmng bolts 
at tlie players 

Throughout the fame the 
Wi/ard talks to the players over 
the sotJnds of battta antf a haunt 
ing melody which adds lo I he 
dungeon mood. 

A radar screefi enables the 
player to keep a check on invts 
ibie monsters and this becomes 
more critical as the dungeons 
become more spacious 

A Midway game, distrrbulad 
here by Bally U K , Wizard of Wor 
has brought a new world of tan 
lasy to arcade pmes 



.4 

1 
i 


^^^f 




BLUE WORRIOR j 





COMPUTER ar VIDEO GAMES 29 



f 







LET lis atari by clearing- up the 
terminology. Reversi i^ better 
known thes# dctym as Othello but 
thai is a recent name tor a game 
the programming of Othello in 
Rev0m for at least 100 years. 

I hope to gwe some guidelmes 
to the tactics of the gome and 
then show how a relatively 
simple- minded Basic program 
can play a reasonable game. I 
beheve that it i^ possible to write 
an unbeatable Othello program 
but thot would require a larger 
computer than most raadere are 
likely to have available and il 
would have to be written in 
Assembler language lo be fa^i 
enough 10 suit a human's idea of 
reasonable thinking time. 

If one rates games by the ratio 
of the subtlety of their Etrategy to 
the simpHcity of therr rules. 
Othello ralefi very high indeed. 
Unlike most games which evolve 
slowly from move to move* the 

poisition of on Othello game con 
change dramatically with a 
single move. 

Indeed, a good computer pro- 
gram con be<it even expert 
humon opponents regularly « 
simply by being better- equipped 
to keep track of a succession ol 
complex boord positions. 

A beginner- and a very simple 
computer program, might ploy 
by olways looking lor the move 
which turns over the most oppos- 
ing pieces. That strategy will 
lose to any player with a little 
experience because the Othello 
player soon learns that what 
matters in the early stages of the 
game is not how many pieces 
one hos but where they or^ situ- 
ated, 

!l is not yntil the last do^en or 
so moves thai sheer numbers of 
pieces ore important. What 
matters is how useful a piece is 
OS a back-stop lo help the cap- 
ture of other pieces and how vul- 
nerable it is to being captured. 

That mecrns that the board 
comers are very important^ for o 
comer piece can never be cap- 
tured. Positions on the edge of 
the board are also useful, since 
they can be captured only by 
other edge moves. A great deal 



By Tom niapiep 



fleversi, now popalai ufttef Itie 
tr«d« ntme Qthillti. ii a two pliyer 

flamfl. played on an QigM by «tght 
square board with M doubla sidud 
countars. laf's sup post chem lo tie 
fatack aiifl whits Each playtr 
placis a pitcA in turn wilti his own 
cotouf upparmo&t The fir si tour 
places mf^ played on #ity ol iha 
foyr eanire tquaias ol Iht board 
but hereafter a piece can only be 
plaeed rttMi lo an opponent s piece 
so as to cfoate a lino ol one or 
mora adiacent oppo»ing piacat 
baiwaen rhe piece |uit played and 
ono of one'f i^wn 

Ttia inlervenrng opposing piecoi 
ure than turned over to exhibit 
ont'i own colour If more than oite 
line of pieces meet these condi 
lions at a single move then all the 
triipped' pieces are turned o^er 

II a I any stage a playaf cifinDt 
make a lef al movia ha passes and 
his opponent malces the next move 
If neither can make a legal move, 
for e«ainple. when the bourd ii lulL 
the game i« over and Hie wrnnat it 
the playcf with the most pieces ot 
hii colour visible on Iha boariL 





ABCDE FGH 


1 








• 


1 








2 






2 












3 




3 


Q 


1. J 


4 








4 




5 


a 


o 


n 








5 


6 





a 


m 


D 








6 




7 


• 


o 


O 









7 






mum 






■ 


8 




a 


Qcm 


9 







of the strategy of Othello con- 
sists ol forcing your opponent 
into a poslfion wh#re he is 
obliged to move adjacent to an 
edge or a comer and sc* allowing 
you to establish a piece in one of 
those strategic locations. 

The COT reel pasitioning of 
pieces along an edge so as I o 
minimise an opponent's gains 
requires considerable thought 
on the part of either o human or 



electronic player but a reason- 
able game cran be played by 

adopting some fairly simple 
tactics. These tactics can be 
translated into esti mating a 
desirability figure tor each 
square on the board — much the 
same as the points system in 
chess. The Idea is then to move 
lo ochieve the highest sum of 
desirables of all the captured 
squares. 

In essence, that is a one- move, 
look -a head strategy. A tnonj 
sophisticated program would 
look ahead tor many more 
moves. 

The figure shows the position 
at an early stage ol a typical 
gome. White has played first 
and it is White's turn to play. He 
has a choice of nine legal moves, 
mdieated by the numbered 
squares. Of those ^ 1 and 3 would 
capture one black piece: 2, 3. 4. S 
and 7 would capture two; S 
would capture three: and 6 
would not only capture three 
black pieces but would also 
establish White on a 
previously-unoccupied side. 

Unforlunately. to ploy on S 
would be a fatal error, since 
Black could move immediately 
into the bottom left comer by 
capturing the three white pieces 
in the bottom row. That would 
establish him in a very advan- 
tageous position. Thus White's 
only safe move is in Hquare 9, 
since that avoids the threat to his 
pieces on the bottom row. 

If this threat had not been pre- 
sent the move at 6 would have 
been the best choice, whereas a 
move at 1, though on an edge 
square, would have been rather 
poi^Uess since the piece placed 
at I would be fe-captured 
immediately. 

• Next month this page will deal 
with the problems oJ pro- 
gramming o microcomputer lo 
play thof increasingly popular 
game of Go- 

The fanuary issue will feature 
Bridge. Tom Napier will be back 
to give you further insights inlo 
the programming of Othello in 
our February issue. 





VM& iive in the age of computers. 

Coming to terms with them aiKJ 
en|Ofif>g them to part of comtng lo termi 
with the i^wfitteth centur)i: 

A few )«ars ago, a computer wouW hi^ 
filled a &ir-si2&d noom. Now micpotcch- 
nobgy h»a]tow^ Commodore to prodiKe a 
hpmec^tjmputen the VIC 20, thais no bigger 
than a ty|>e writer j^t performt miraclfr^ 

FOA BUSIN ESS- OR PLEASURE. 

VIC cart kti€f^ your dary up to date. 
Teach yo^j maihem^tlci- Phy an enormoux 
fWfft of video pme&. Ev«n pkay ji pi^e of 
mysk to soothe your worried brow 

In ixi^ you and VIC an do aLmosi 
af^ything better Keeping records of femilj^ 
AnaKes, sorting out and v^rking out 
hoiwhokj accounts, being ooe ^oep aheacf of 
the btnk rranig^r or hefptng your own 
business be more bi^inesstike. 

VIQTHEBEST^iYFAIt 

are reaify ratmr friend ^|t VIC ts particularly 
euy to understand. k\ what the computer 
people all 'user friendlje' The typewriter- 
type teytoard ts easj' to use. It even telb 
^u about mocakes you might make. 

If you're technteally mincfed, here^ a 
nemifidef. VIC has a Sk memory expandable 
10 29k. (That meani you can put in an almost 
endless amount of information.} 

But what makes the VIC the best home 
computer by far ire featum that are jUiC not 
available in most other home computers. 
Futures like colour, computer graph ks and 
sound. 

PLU G IN *NP YOU TtE OFF. 

VKT plugs m to any Mievtsion set, cobur 
Of black and white. {Ytt a«<^ frt a 13 amp 



i 



yg. so you can pby with VIC right awajc) 
hu don't ha^ to learn a special language. 
VIC speaks English, just like pu. With the 
help of our haffcdbook, you will begin to feel 
at non>e to the work! of computers in no 
time at all 

COMPUTER 

SUPERMARKETS 

GUARANTEE. 

Buy thnougjh Compucer Supermarket 
^md you get exactly what's promised. V^ 
guarantee you that. 

Ewry mach4r>e is thoroughly 
tested befone its despatched. 
And ewry machine is guaranteed 
hr tv¥elve months on parts and 
febour I Not that yoyTI need it, 
of course.) 

In the unlikely event that you 
don't want to keep your VIC, 
juH return it. m m o riginal 
packaging, within 10 day^ aiid 
^yr nrxjney will be completely 
refunded. 

FRJEEPROCRAMS. 

Api^n from the mone practk:al things 
like accounting, and the mone pteasurabfe 




things like video pmes, you can put VIC to 
lirerallv hyndredsof trses. 

there art pre-recorded pnjgrams on 
many drffenent subjects. You can de«bp 
your own programs and store them by i^ng 
ordinary cassette tape. 

The speclaJ Commodore cassette 
deck ts on offer at only £44.95. If you buy 
VIC and the deck together well send ywj i 
6 pnDgram pack to start you off thati 
absolutely free. 

YOyR FUTURE WITH VIC 

Itl a big step inio [he future^ 
Understanding the future. 
Having fun in the future, ^y^ 
savingltionev in the future. 
E-^ry member of the family, 
eipeci^Dy the young, will feel at 
home with VhC right awiy So 
send in the coupon, lrtte*re mm 
youll fifKl the b^i hon^ eorPf 
outer in the workJ wHI make the 
world of dmerence to you and your bm«b( 

Computer Supe rtnar ket Ltd., Unit 8. 
Southfokis Road, Oakley Hay Industrial 
Estate. Corby. Northants.Teh (0536) 744015. 
Reg. No. 2646569, PrwteJ No. 400400, 



VCT^m € W.^^ rath iftClMlwt D* p*tk«fi't tMro]^ ind MiurVlCiL I 



GHflp^ltCf S^y|wrm*rii*t lid 

PtalW K£frpK tny Qr49f for VK^ imm tllTf TPS MK-B IhCHllHt DT pKhijt 






i 

I 

I 

I COMRJTER SUPERMARKET I 



PiMw w km imim^ ^ om 4tfi Isf ^i*i*fy *Ct^^ Card af6tt% can bi iftiaptoiml la jOSli; ?4<qiS ii«?Min>. 
Mimm 



ChK]c No ttl 
COMPUTER & VIDEO GJlHES 31 




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tflAtM 



•'-Jf^wS'^***" 



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^^,„„£nm2 



«««•*•*"!! 



«n«nw«*» 



3B 
40 

50 
63 
70 
68 

?e 

91 

92 

93 

94 

95 

9^ 

97 

96 

99 

100 

110 

120 

138 

140 

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160 

176 

160 

190 

200 

230 





1 H&»0 

tCLS 
PRINT !AI:<(20)*? 

PftlNTiPRH^TTAEC 15 >f :rRlNT"^F-6CE 
PRINT 
PfelNTTrtFiC «? >S3rftlNT "•";.. :.\>tf ITjOPI for 

FriF- I' :."u^et+'iE ru ^t;L,.;'J4 i*iLf' -l 

pi . f 181 1 POKE V-lfSZW'OKE \J*i*32 

FDR Ital TO 100: NEXT 

NEXT V 

FOR V=fL*a5B4 24 TO :;05O+48 STEP 1 

POKE V*iei!PGKE y*l*8A SPOKE y-lt32 

FOR ti-1 TO 100: NEXT D 

NEXT V 

FOR V=2058+48 TO 2050+24 STEP ^1 

POKE y » S e J ! POKE V- 1 i 89 : POKEV+ 1 w 32 

FOR D=l TO 130aN£XT D 

NEXT U 

POKE 2058+24 t 32 

PRINT" Th«> -^hjff-it of the aane is t.c> de^tr 

PFVINT'* adv^ncma dlt&ins b«foria ihav land 

PRINT" You have 3 base* to «tart, with and 

PRIHT"n«n«iae ti> *core 1509 poinds v>u i4i 

PR INT*' awarded an cr;<tra b«*e" 

PR I NT "The kevs whi<=h rtove vour basiR^ are 

PRINT"ht arrow to nov« vour bas« riaht a 

PR I NT "eft arrow to nov« vour base l»ft a 

PRINT"spaee bar to fire " 

INPllT"PftESS ANY KEY TO CONTINUE "tm 

CLS 

PR INT ■■ L INESL INESL I NESL I NESL I NESL I NESL I NESL INESL I NESL I NESLINEGL I MESL 
L INEBL I WESL I NESLI NESLINESL INESL I NESL I NESL I NESL I NESL INESLINESLINESL I NESL 
LINESL INEiiLlNESHNESLINESLINEBL INESL I NESL INEStlNES"? 
231 PRINT-'LINEGLINESLINEELINESLtNESLINESLINES"* 
240 PRINT "ANDFREFREFREt Sh'ace shi»'' scores rando« scor*" 

250 PR £ NT "L INESL I NESL I NESL INESL I NESL I NESL INESL I NESL I NESL INESL I NESL I NC!^L I NESL I NE5 
LINESL INECL INESL INESL INESL I NESLINESL INESL I NESL INESL I NESL INESL INESL INESL I NESL I NES 
LINE5L INE^LINESLINESLINESLINESLINESL INESL INESLINES"; 

251 PR INT"L INESLINESL I NESL I NESLINESL I NESL INES" 
26& PRIMT'Top row of aliens scorer 50 points'* 

270 PRINT "LINESLINESL INESLINESLINESL INESL tNE5L INESL INESL INESLINESLINESL 
L I NESL I NESL INESL I NESL INESL INESL I NESL INESL I NESL I NESL I NESL I NESL I NESL I NESL 
LINESLINESLINESLINESLINESLINESLINE5LINESLINESLZNES"; 

271 PRINT'^LINESLINESLINESLINESLINESLINESLINES" 
260 F'RINT"Se-'*iond row of alelns scor* 30 points" 

290 PR INT"LINE£L I NESLINESL INESL I NESL INESL I NESL INESL I NESL I NESL I NESL INESL 
LINESL INESL ZNESLINESLINESLINESL INESL iNEi^LINESLINESLINE'JLINESLINESLINESL 
L I NESL INESL INESL INESL INESL INESL I NESL I NESL INESL I NE S " S 

291 PRINT"LINESLINESLINESLINESLINESL1NESL1N£S" 
300 F'RIN'T"Third row of ali«»iis score 15 poimrts" 

310 PR I NT" LI NESL I NESL I NESL I NESL I NESL I NESL I NESL INESL INESL I NESL I NESL I NESL 
L INESL I NESL I NESL I NESL I NEBL I NESL I NESL I NESL INESL 1 NESL I NESL I NESL I NESL 1 NESL 
LINESLINESLINESLINESL INESLINESLINESL INESLINESL'INES**; 

311 PRINT"L INESL INESL INESLINESLINESL INESLINES" 
320 F'RINT"£tottOM row of cilisns score 10 point ■" 

330 PR INT "LINESL INESL I NESL INESL I NESL I NESL I NESL INESL INESL I NESL I NESL INESL 
L I NESL I NESL I NE 5L INESL INESL INESL INESL I NESL INESL I NESL INESL INESL INESLINESL 
LINESLINESLINESLINESLINESLINESLINESLINESLINE3LINES"? 

331 PRINT"LINEIL1NE3L INESLINESLINESL INESLINES" 
33*: INPUT"Pfi££S ENTER TO CARRY ON"!C* 
340 CLStCLEAF; 18e00eDlH AC 2r 1 );SC=2a58:KI-64 



INESLINES 
INESLINES 



INESLINES 
INESLINES 



INESLINES 
INESLINES 



INESLINES 
TNFSLINES 



INESLINES 
INESLINES 



32 COMPUTER k VIDEO GAMES 



This is tha gofne thai needs no 
introdtictioD, Can you stop the 
advance of th© "'grd^D meanies" 
from oti(«r space 

Sat in your battle tank, dodg- 
ing deadly fire from the oncom- 
ing hoifdes oi alien honors. Dart- 
ing out Irom behind your crumbl- 
ing defence wall to zap one of 
their leaders before he gets too 
close. 

The object of the gome is to 
deatroy the advancing creatures 



BATTLING 



before they can land on the 
Eorlh. You hove three bases to 
start with and if you manage to 
score LSOO points you will be 
awarded on extra base. 

The keys which move your 
ba^s me the right arrow and the 
left arrow and you lire by depre- 
ssing the spoce bar. 



This game by Terry Brown and 
Karl Parker, runs on a Nascom 2 
and ia o good likeness of the 
arcade game which gave Its 
name to a wholo genre of 
machines. 

The fate of the Earth is in your 
hands. 

The large are^i of this listing 
which reads XINES'^ is a Nas^ 
Basic 'Reserve Word''. For each 
"Xlne®" replace it with a CHRS 
n 52}; graphici symbol. 



THE INVADERS 



35e 

38 e 

390 

4ie 

^30 
440 
450 
469 
470 
4Q0 
49fl 

see 
sie 

538 

540 

5se 

^70 
58t3 
59B 
600 
6^0 
626 
1^30 

b^a 

M0 
688 
?0t4 



, so 
?90 

£;lto 



WIDTH 255 

n*-l 

DIM 1(&>3p2} 

FOR A«=332e TO 3346 

IfOht A.BtNEXTiLiQKE 

&A«=" LETR£AD " 

FQfi A^L TO 23 READ 

FOR A=i TO 2: READ 

FOR A=e TO 

FOR A«0 TO 

&N»3iPT=a 

A* =■ "SCORE 



3:(V£AD 
6 3 READ 



m-inesheflines/' 



!;tef- 2 3 read 

4l00i332Q 

A»( A,0>2NEXT 
Ate ApI >:NEXT 
P(A>SNEXT A 
C( A)!«EXT 



B 








♦SPACE 



INVADERS* " 
A*=A*+"BASES LEFT"5F0»V A^l TO LEN< A« ) 
rOKE 30i8+A*A'',C<MID«( A^rArl > ):NEXT A 
rOfi A=0 TO SsPOKE 30^a*Afl70:NE)CT 
FOR A»l TO 4 ft FOR D«13 TO 14 
SCRCEfJ A«ll"5rD SPRINT Bt^sNEXT B*A 
Etf'-ifiCOSUD 640 
GOSUB 550 :COTO 1780 

ST=0!Kfc=0iFOR A=0 TO 6SF0R B^B TO 3 
I< A»B*0>":NTf r-NDf 1 >*2> 
It A*&tI )^A#6-*4s t( AfD.2 J'=^fe«2*2*IH 
NEXT fit A 

FOR V-e) TO 3 1 FOR X=0 TO 6 
GOSUB 1550 

NEXT X»Y5X«etT=0;SH=0sK&=»l 
ST=1!IH=IH+13IF 1H>4 THEN IH=4 
KB- U RETURN 

SCREEN BP*lSiPBlNT BAiJsRETURN 
IF HP>1 THEN 676 

SCREEN 1»13PRINT "AWDF REFREFRE + '* 
HF'==Hf"4 1 s SCREEM l.lsPRiNT CHR»< 22 )l 
IF MP-'H'? THEN MS=0 
RETURN 

IHEf U^t 
U c-i^' ('tr»tD t.H^0 I HUN SH«^1 sC^^Hf* ''iSP' 
ir 8f »-Dtl OR litp + £i>i!^2 THEN D=^0 
Br'=BP+0 
.<:J'££N BPflSspRlNT BAS? 
RLIURN 
FOR C'0 TO 6*ir SH<Cj=e THEN BE© 

r-':;c+sp< c HHi*GHt c i 

i^ ' ' ' . THEN 070 



13 




COMPUTER k VIDEO GAMES 33 




nivscoM 



820 
849 

888 

398 
988 

910 
920 
938 
940 
950 
?&0 
970 
980 
990 

1838 
1838 

1040 

1050 

1868 
1878 
1880 

1090 

iiee 

1110 

1120 

1130 

1140 

1150 

1168 

1170 

1108 

1190 

120B 

1219 

1220 

1230 

1240 

1250 

1268 

1278 

1290 

L290 

1300 

1310 

L320 

133 J 

1340 

1350 

1360 

1370 

1300 

1390 

14143 
1420 
1430 
1440 
1458 



THFM fiFTI IK>M 



POKE P*184 

SH( C >=SHt C ) ♦ 1 S IF GH< C K 15 THCN Q50 

SH(C>«8 SPOKE P»32 

NEXT C 

Frip rr»fl TO AtTP qw/r^^oi 

NCXT C 

IF SH<C)(14 THCN 978 

SCREEN IflSaFPlWT CHf •< 2/ >F 

FOR T-1 TO 500 5 NL XT 

BN-^I^ 1 SPOKE 3060»Eir4r32 

5H< C >o>0 

IF hti-<i THEN 1800 

SCI<CEN BPtl5;PF;INT BAi? 

RETUft?* 

FOR S=l TO 5? IF PEEK(P)=C<S) 

NEXT^GOTO 840 

POKE PfC(S+l >!SH(C>«B = C0TO 650 

FOR N™1 to 16JPRIHT:wrxT 

SChT.EN Ifr'JPtrlMI CKf<»< .':7 >? 

PRJNT "THIS IS THE END OF CiyiLiZAlION 

PRINT "AS UE KNOW IT!" 

(;0T0 1510 

F'-SC*SX+HI*SP 

IF PEEKCP)(>32 THEN 1128 

ir PEEK<P+Hl K25 THEN POKE 

POKE Pr25iSP=-3P"lSlF 3P--1 

RETURN 

POKE P t 32 !SN=«s RETURN 

HM=0 5 RETURN 

FOR A^a TO iSFOR B=0 TO 3 



BATTLING 



THEN 990 




P+H If 32 
THEN 1186 



IF l<Ariif0K8 THEN 1298 

IF SP<I(A»Bp2>-1 or SP>I(A»Bf2> THEM 1298 
IF SX<I(A.Btl} OR SX>I(ArE/»lH4 rNEN 1298 
SCREEN I< ArBrl >fl( AfBi»2>«PRINT D%i 
SCREEN I(A»B»1 >r It Af 6*2 J4 1 tpRIWT"/'"DEF-\" 
FOR 115' 1 TO I'StNEXT D5 

eCREEN I< AfBrl )flt ApB*2)sPRINT '• "» 

SCREEN I(Apfitl>fI(AfCir2)+l SPRINT '* "i 

T=P( Et>:pT=PT + T 

IF PT-T<t500 AND PT>=1508 THEN GOSUB 1500 
A»=STR»( PT MFOR C»l TO LEN< A* ) 
POKE 3025+CrASC(niD»( AffCrl >)iNEXT C 
I(flfB^0)*'i:SH^0SPOKE P*HIf32 
FOR A=0 TO 6 8 FOR B-0 TO 3 
IF I{AfEfr0)>-0 THEN RETURN 
NEXT B>f^i^H*=t»tGQ10 ^58 
NEXT B,A 

IF PEEK( P >'184 THEN 1338 
IF SP(13 THEN POlsE P+Hl »32:QPTQi360 
POKE rr326P0KE P+HI»32 
FOR S-0TO6«IF SX=SP(S) THEN1350 
NEXT S 

SH( S >"8 4 SH'sSS RETURN 
IF SP>0 THEN SH=8eRETURN 

T=INT< RNLif 1 >*S01 >sPT^PT+T * 

IF PT-T<1&00 AND PT^'-ISSS THEN C03UB 1588 
A«*STR«< PT )!FOR C = l TO UEN< A* > 
POKE 302S+C • ASCt HI U*< A* » C f I > ) = NEXT C 
GCREEN 1 1 1 SPRINT CMR** 27 )( 
Mr -0S RETURN 
BB=lNT<RNDf 1 }*?> 
IF SH<UB>>0 THEN RETURN 
FOR C»3 TO 8 STEP -1 




31 COMPUTEH U VIDEO GAMES 



THE INVADERS 



1466 
1470 
MSB 
1 490 

isee 

1510 
1520 
1530 
1540 
1550 
1570 
1580 
1590 
1600 
U10 
1^20 
1^30 
164,9 
1650 
1660 
1670 
1668 
16?a 
1700 
1710 
t72« 
1730 
174^ 
17S0 
I76e 
1778 
1780 

1810 
1C20 
1B30 
1048 
1850 
1860 
1870 
1860 
1B90 
1900 
1910 
1930 
1930 
1940 
1959 
1960 
1970 
199© 
2«e0 
2010 
2620 
2030 
2040 
2050 
Ok 



IF I(flBrC»0>>-0 THEN 1400 
NEXT CSftETUr^N 

SH(BB)»lf &EpC.2>t^l:SP< BB>«I<PBfC*l )-*2 
rm=l» RETURN 

POKE 3060+ UN » 1 70 ! EiN= E«N+ 1 s RETURN 
SCREEN 10 t 9 

PRINT "TYPE ENTER' FOR ANOTHER GAME" 
A=USR(0):ir A013 THEN 1538 
RUN 

IF ST«B THEN 1730 
IF MS=»1 THEN GOStJB 650 
IF i^S=% THCN GDSUE* 650 
IF H5=l THEN GOSUB 650 
IF KB-1 TI-tEN GDSUEi 700 
IF KB^l THEN COSUB 708 
IF KEtKtl THEN C05UB 700 
IF Bh=t THEN COSUB 780 
ir BM»1 THEN GOSUB 780 
IF Bh^l THEN GOSUB 780 
IF RND( 1 >>0.4 THEN GOSUB 
SH*0 THEN 1710 




1430 



IF 

FOR Z=l TO 16! IF SH'=0 THEN 1710 
aOSUE<10Se 
NEXT 

IF I<X»Y»0><0 THEN RETURN 
IF MS=0 AN[f RNtKl)>0.99 THCN MF~liMSs»J 
SCREEN I< X»Vf 1 >tI(Xrr*2) 
PRINT A«< lrHX.y*0>>; . 
SCREEN KX^fpi >»I<XFYr2)+l 
fftINT A»<2rl<X»YT0Hf 
RETURN 
F=0 
: ,^U .^^J ro R STEP 1:jOk X=^A TU » STt* -I 

IF i(XpVp0><0 then in40 
i<j(»y*0)^i-l(Xry?e> 

I( X»Yf 1 )»?I<XfYrl J+N 

IF I(XrYpl>=2 OR I(Xpyrl)»42 THEN F^l 
GOr.UB 1550 
NEXT x,y 

IF F=0 THCN I ■'90 
F=0 

FOR y»3 TO STEP -IsFOR X=<^ TO STEP -I 
IF IfXfYt0)<e THEN 1920 
I<XrY^2J=-I(Xfyt2)+l 
IF ItXpYi2>-14 THEN F»l 
COSUB t550 

SCRErri I( XfYr 1 >pT<Xry»2>'l 
F'RINT " "f 

NEXT X 

NEXT y 

IF f=a THEN 1800 
H=- He GOTO 1700 

DATA rM'? 1 1548 * 13G33 r 0960* -1264 
UATA 25055t 312 rl 8351 T 10927 f -0179 » 233 
DATA " LETJlREAD " t '* VAL hv " 
DATA " LETtJREAO "t" hv VAL " 
i;iATA S0t30»15Fl8 
ti AT A 32 » 201 f 219 f 255 f 246 * 22B t 32 




COMPUTER ft VIDEO GAMES 3S 



Try to outwit the cotmMiter opponent and mtkt ywr» the 
last ptoce on Us toanl. A name of careful strategy. 



Siiwpnifn win run in Apple H syttems witli 18K. By Jefry Dabneff 




Supemim is a tad i ceil game ot 
skill which goes one belter than 
the old traditionol game ot Nim. 
An ideal candidate for com- 
puterisation, Kim has foots 
gtreiching back far into the Mid- 
dle Ages, From a line up of 
pieces two players take it in 
lurna to remove 1-3 Irom the 
board , However if more than one 
is taken then they must be 



fW»i 



removed adjacent ly, either hofi* 

I^ontally or vertically. The player 
with the lost piece on the board 
wins the game. 
Nim ha^ alr«<idy proved a 
popular computer game with the 
machine a worthy opponent, tak- 
ing pieces from a screen dispLoy . 
M However it is normally played in 

tone dimension. In Supemisa 
another dimension is added to 




^, 



I 



' i'^ 



^n 




^ 



^MPUTEn* 



VIDEO 



OAii^ 



i 



mak« the game a great deal 
mor^ Ihought-piovokijig* 

Ide<xlly SuperriLm will run in 
Apple 11 Byslems having Fbrn- 
wcire. Appleaott and 16K hem 
memorY. It should also run in 
24 K sy&lema with Applesoft in 
RAM. 

Supemiin will amuse and 
challenge you, 1 1 has three stan- 
dards of play and you can move 
on Iroro a beginner rating to an 
intermedlote and finally an 
odvanced player. 

You can also vary the initial 
number of sections and choose 
whether you would father go 
lirs! or second. 

As famous eastern 

philosopher and Nim player, Ati 
Ho:ieez once said: "May you pick 
the Last camel and be aboard hi& 
hack, five minulas before i1 
occurs lo him to spit!" 



10 
30 

4'J 
50 



bO 



TO 



BO 



W 



REN A RULTI-DIHEN5IQNAL 6AHE 

PER Bt J£ftftt D^BNOFr 

m I • 770 TO mt READ Jt POK£ 
I.JtK • K * Ji ttit I IF k i 
> M31 tHEN STOP i REN DAT 
A ERROR 

DATA i73,4ej92pm,2(4|5,2«« 
,t,3,240,9,202,20l)| 215, 174,0 
,3,7fri2,3,9«,l69,4,7l,ei,l41, 
lli3,9b,4,3.0rl2,Or47.0,«3,0 
,I4,0,«7,0 

WTft 21*, 21?,27,56,46,fc2,9, 
S8,48,U,3i,17,37|»,l4,9,39 
,172,171, 33,44, 86,104,34, 44, 
54,1,86,48,14,34,53,40,54,0, 
2i9,S5S,3b,44,45,222,43,45rS 
4, 73, 33, 3i, 63, 9,45,0 

MTA 219,219, 34,Ji,53,S3.53,3 
7,3^,9,54,14,13,3^,45,18,36, 
45,54,6,0,14,36,0,219,19,36, 
63,84,41,37,9,54,46,37,36,63 
,73,49,54,45.36,4,0 

IF PEEK t!75) * 256 I ^K 
t|T4) > 8157 THEN 150 
mi 232,Ki POKE 233,3i TEIT 
r HONE 1 HBR I SOT* Oj FOR [ 
« 1 TO 5j scale* It CQ5UB I 




20i NEIT 1 FOR I » « TO )28 STEP 
4i ROT- h eOSOB l2Ci NEIT i 

FDR I « 1 TO 15t SCALE* Ii GQSUB 
120i NCII 
J JO FEW 1 < 15 TO 1 6TEF - h SCALE* 
ll Km J20i NEU I FOft I i 
1 to Bj SCALf' U eOSUt I20i 

MEIT t HCD(.DR> 6i DftAM t AT 
140,901 F0« J » 1 TD 5i PRMir 

CHRI <7)t ICIT I 80T0 140 
120 iBJ^Att t AT 140,901 FOR J « I 

lOSiK - PEEK { - 16336) I MEIT 

I mm i At 140,901 DEtimi 

130 tEIt I HOW I VtAl t2i HtAI 
lit PRIMT *itt SUFER-mn III 

■ 

140 SOSUB U70l TEIT l HONE i 80GUB 
1180 

150 VTAi I2i HtAI 14) PRINT *m 
t INSTRUCTlDltr 'I eOSUB 119 
Ol IF 1 « 217 THEM PR mi It 
I 60SUB 1040 

m TElT 1 MQIIE ) VTAI lOi HTAB 
7l PlilKT •! CAN put AT BIFF 
EREKT LEVELS OF'i «lTAB 7i R81NT 

*sii[LL. tiu NE [f m mt* 

I PRINT 

170 HtAB 7i PDIHT Ml A lEfllWtEft 
*t HtAB 7i PRINT *2i AM INIE 
Rt^DIATE PL AVER* I HtAI 7i PRlNt 
*li AN ADVANCED PLATER*! PRINT 
1 HtAB 7 1 PRINT *ENTER 1, 2, 
OR 3i 'B4| 

lAO 6ET Ati FOR DF - t TO 3i IF 
At - STRt (DF) THEN PRINT 
Iti tOTO 200 

190 NEIT 1 BOTO 180 



SUPER 

NIM 



'^**^*Wn£o 



gaaies 



37 



What would I dowith a computer? 




iiM d«i l^rwd I 




The first personal computer 
that only r/ZQQZ 
adds up to dJXXAyD 

Voull be surpnset! hciw much you 
can da with ^ pers.on4ilconifiiHcr;.in<lcvcn 
more surpn^^ed al how htilc ii ^;«isls 

Wc made it our busmen u> find r>oi only 
the besi-valuC'fiiMnoney iompy ler oft ihe 
nmritel.hukdsLithe bcsi Ni^ik^ \o cn^iblc rau ks 
pfT>gress from a beginner loan ailvariceii met. 
Ami WJ I, Smith b Ihe onlj rt'tail chain whi^ie you 
can buy iheincredibJe ZXRl 

HieSinclasf ZX8I isania^ilcrpieceortleiitgiv Which is 
nihy It can cani niii priigiiim^ yoircj pormalh expect tVom more 
e*i(KnM\c con^puit^Di 

Allhoui^ the /.Kfi\ rs last «ind ptmeriuJ. ii^ also *^im pic louw 
Wrthiiihi^ ileamiofun progriims and within a week yoy 

could be V. , r own com pie x pn jgrani s, A 1 1 yuu need i s your tiw n T\ 

(any model that recdves B!iC2> and a ca^^elte player v^hi^nuwng 
pfc^pmgnmrnied cassetfes And \fV 1 \ Smith hci^ea nniBC ;i\,ij table I mm i^ M> civh 

Sti ijJkc voui first steps lo computmi! ill W \ I . hmitli and m^ikc your Ijfe c^stci n * tun 

WH SMITH i^ 




D=: 



i^ittipi 



^^fuilM ^ri-,^ ^ ^ 1 li a rMWugy w Uk«MfU4j-frirFi ^MJu-kA Mri^Aiii "^— !*• ri4l ^i^«IWM 1i#i 



I JlIP ItalMiiiH 



M^tf 



inHKJIh PiJHri 



38 COMPUTE ft VTDEO GAMES 



cip«i* Ha. m 



21) 



220 
2» 



2» 



260 



RPPU 



HOtlE I VTMI L2i HTAI 7i 
'ENTER I OF SECTIOKG 12-61 t 

'\ 

BET All FOA HI * 2 TO 6i IF 

Al ' 5TRI mn THEN PftlMl 

>li MWI I 6DTQ 210 

NEIT ] SOTO 710 

FOR ^ • 3 TO ^iS(J) - Oi N£IT 

)Hv • oisut * ih m i * I 

TO fltl&lJ> > ftl RI19) * 43 
t NEU I IF HI > 2 THEN StJ) 

• 
240 HV * FN R{42) * 10) FDR J ■ 
] TO IS) IF m • HTIJ} THEN 
240 

NEIT iSm ' a - mm * oi 

HQHE I HTM 111 niNT *iMlT 

TC 60 FIRST? V|t WSUi 1140 
2'^0 BET m IF Al < *r THEi 300 
260 ]F M < 'N* THEN 490 
m SOTO 270 
300 HOflE 1 HTAI I3i PRINT 'IVl 

yOUR TURN.*!! 
310 FOR 1 ■ I TO HIi [F TKI) - 

Tl TWN FW R > 1 TD JOOOi NElT| 

I niNT ) HTAI 3 1 PftlKT *] 6 

UESS m HlLl CHOOSE SECTIM 
M' "BlBli FOR P - 1 TO 4S 

00] NEIT } SOTO 360 
320 NEIT I PRINT t MTA6 4i PRlttT 

*EMTEI» SECTION I, DR B FOR Q 

UHi 'I 
330 6ET Ml IF H - *0* THCN T£n 

I MHE I CLEAR r 60TD 920 
340 FOR ] - 1 TO Nil IF «fi • STAI 

III MB GC]} THEN PRUT Sfi 
MTO 360 
350 NEIT t 60TQ 334 
360 CEI • '*) FW B ' 5 TD STEP 
- tl IF Slli,l» THEN CSI > 

m * 6TR« (6 - B) « * 'I iOTO 




SUPER 




370 CSI ■ CSI ♦ ', • 

360 MEU I POKE 34,1 St HOME i HTAB 
let PRINT LEFTI (C&l,6h KTAB 
18) PtIMT KIBI l£SI,7,6l 

390 IF TBd) - I THEM PRINT t HTAB 
il PRINT *NOT MUCK CHOICE' 1 
'U HOVE FOR m. *BIBli GOSUB 
||70im ' SlIliSllI ' Oi 60SJB 
680r eOTO 470 

400 PRINT I PRIKT *TME PIECES Itt 
SECTION 'III* ME SHOiM ABO 
VE.*i POKE 34,20 

410 PRINT *ENTER VOUfi NOVF AS 1- 

3 A&JACENT OISITS'J INPUT M 

N ASCEND! N« ORDER, I HIT 'RE 

fURN'i'iAIr IF LEFTI lAI.H 

• 'r m* TEIT I HOME 1 CIE« 

i SOTO no 

420 FDR }> 1 TO J5i IF LRKJf > 
Al THEN GD&JB 820i SOTO 4M 
430 NEIT 

440 HONE I FiASH i HTAB 3l PRINT 
'THAT mi DOES NOT COMPUTE' 



11401 FW P - 1 TQ 20001 NEH 
I IF Tt - « TliN e«» 

4B0 HV • Oi GOBti tiO 

m HOHE I HTAI Mr PRINT 'IT'S 
NY ruRN.'Bli PRINT i FOR P ' 
1 TO 1300) NEIT ] IF TB < 3 BR 
OF > 3 THEN 510 

SOO IF Bf > 1 OR I RN& 11) > .3 ANfi 
Tl > 7) MN 640 

SIO POKE BL.PIr POKE 03, FN SISI 

U>t FOR J « 2 TO KIj POKE 

1, PEEK ID3lt PDKE 82, FN fit 

SlJlh CALL 8fii NEIT JiSW • 

PEEK 483) 

S24 IF NOT SUH AND Tl ( 3 THEN 

FDR P > I TD lOOOi NEIT i FLASH 
I HOHE t VTAI I3i HTAB iSi PRINT 
*l SIVE UP' *i GOSUI tlAOi fiOSUB 
IJ70I UDMAL I eOTD B40 

330 IF NOT SUN THEN 640 

340 IF TB < 3 THEN HTAB 3) PRINT 
'SORRY ABOUT THI6 NEIT HOVE, 
lUT,>,'t fiOSlW J 1201 SOTO 3 
60 

330 IF TB < 3 Tifit HTAI 3i PRINT 
M BON'T THINK MUCH OF YOUR 
CHMICES"J mat 1130 

360 FOR P ■ t TO 300i HEIT i PQKl 
Bl.SUIIi FOR ] • i TO Nil POKE 
B2, FN BIBUHi CALL OSi IF 







57« 



FNGtSnil 



> PEEK (83) THEM 



\ 



AA 



A 



*j NOmAL t PRINT 1 SOSUB II 

&0i SCTO 4)0 
130 IF NOT » THEN 440 
1460 NV - MTtJhSM) > S(n - HVj SOStiB 

6A0 
170 HONE t HTAB 6i PRINT 'YIHNt N 

DVF IE DISPLATEJI ABOVE, 'j 6&SUB 



MIT I STOP I REN PR06RAH ER 

tm 

mm * PEE« 183)1 FOR J • I TO 

IS) SOSUI S20t IF WT QK THIN 

600 
3W IF FN SiSdJ - mUn « N8 THEN 

610 
600 NEIT I STOP I REN PfiOCRAH ER 

ROR 
610 HV • HT(J)iS(l) - S(]) • HVi 60SUB 

6601 mm 1 HTAt 2i PRINT '] 

■tfE REHOVtD 'TH' PIECE *M IF 

TH > I TWN PRINT 'B'| 
624 PRINT * FRW SECTION *!*.*» 60S1IB 

II40I FOR P > 1 TO 2OO0I NEIT 

I IF Tl - TUN 10» 
430 m t Oi SOSUB 6Kt UTO 300 
t40 FOR P « I TO ]O0«i WIT 
630 J - FN R{Hn Ml IF NOT St 

n THEN 630 



OOMPUTEK ft VIDEO GAMO 39 




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SINCLAIR ZX8i...lK''^i'-iP**^vJN^ 

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Understanding 
\bur ZX81 ROM 



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luwh UNDERSTANDING 
tsryOr. Lta^niif8J5 

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Name 

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^50p piqrif ind p«ck I 

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SaM,l)i HEIT iTI - TB * TBI 
ih tin i IF HOT MV THEM 7 

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> I THEN m 

m IF HOT NV THEN m 

m IF UBII) TICV STIU) - STflJ 

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gi ♦ *l 'I WTO 7» 
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7)|miJh NEVT I IFfll ( 4 THEIi 

«]0 
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i\in%M)\ liiT 

81ft POKE 14,]5j SETUm 
820 OK • Oi Pas BiiQAi nti Q1,B 
{III M3KE«2,MT(Jh WlI Qfit 
IF PEEK m) • KTU> TICK 

OK • I :^^^ 

110 ItETUftN 

940 CIEM iN - 5 

9M TEIT I HOME 

«60 IF rEEK tl7l) * 234 I PEEK 

(17i» ( BIS? THEN tWt i BQTO 

l»0 
B70 VT«| I2l HTAI t?i If H * S THEH| 

m PRINT *l N]N'*i eoTo vio 
S^ ROT- Oi SCALE* 8i BOSUB Wi 

enuB ^90t eoBut loioi bcsub 

Wl FOR t ' B TO I STEP - 
tl SCALE- [i SQ8UI 940l NEIT 



S SCALE' ei BDSUS V?Oi FiR J ' 
1 10 32 STEP 4) ROT' Ii 6081^1 
^)»t KIT I ROT- 3?t eOfiilB ^ 
1)1 PDTa Oi FOR I - t TO Bl 
SCALE* 1) 8QSUi W>i mu i 

Km iim 

910 FOR i ■ MO Si PRINT CHRI 
47)1 NEIT » FOR J - 1 TO 304 

01 NEir 

920 8MUB UJOi VTAl 2li fRlNT * 
MANT TO PLAV ANOTHER BAHE^ ' 
1 1 6ET All IF Al - 'V TffiN 
FOR I > 770 TO %hi REAO Ji 

Men ) TEir t hone t bosub 

llBOi 8QT0 IM 
m TEIT t HOK I VTAB Jl) MTAB 
7t PRINT -IT'S lEElf FUN PLAT 
IN6 N[]H m.'t PAINT I HTAB 
7i PRINT -BO LWe WIJL NElT 

im^'t PRINT tm an m 

940 6D5UB 9B0i 60SUB 970t BOSUI 

9&{i| ITETURN 
fM SOSUB 9Qgj SOSiiB f70i SOSUB 

990i RETWN 

960 eosui loooi eosue 970j eosuB 

10091 RHURN 
m FDR J • 1 TO ht - PEEIC ( - 

UmM mu t RETURN 
910 IDRIi 2 AT 140, Ml RETIKN 
990 IBBAN 3 AT ]40,100i RETURM 
ma IBM! H AT ]40,&0i RETURN 
iOlO FOR I < ) TO 3i FOR J * 100 
TO 30 STEP • lOiK > 3i 6D8UB 
10201 NEU I FOR J < 30 TO 1 
00 STEP lOiK > Si BOSUB 1020 
t NEir I mi I RETURN 
1030 POKE 7MJ| POKE 749, if i CALL 

7701 RETIIM 
1030 CLEAR iH t 4i BOTO BSO 
1040 HOME I MTAI 5i PRIRf *JN fK 
IS BAHEr "rOU UtZ' 1 rA«£-r PRINT 
'TURNS RENOUIJIS PIECES FRON 
A 9ISPLAT*! PlilNT ■SH04M ON 
THE SCREEN. FROM 1-3 PIECES' 

tOSO PRINT 'mi K RENOVED AT Efl 
CH TURN, m rF'i PRIMT ■? 
ft 3r THEY RUST Bf AUACENT E 
ITIiR*i PRINT 'HORIZONTALLir 
OR VERTICALLV**! PRINT 

tOAO HTAB 3i PRINT 'NHEN JT IS V 

OUR TURN TQ PLAV, CHODBE'h PRINT] 
*FIR8T THE SECTIOA OF TNf' Dl 
SPIAY HWRE'r PRINT *YMJ NlS 
H TO mvE, AN& THEN SPECIFIC 
*i PRINT 'PIECES, NHICH YOU 
CAR PICK BY HUHSEJi.*) PRINT 

1070 HTAR Si PRINT 'THE PLAYER N 
HO TAKES THE LAST PIECE 'i PRINT 
*0F THE ENTIRE DISPLAY NINS 
THE SAHE.-j PRINT t HTAB Si PRINT 
'YOU CAN VARY NY LEVEL Of SK 



lose PRINT 'm CAN AiSO VARY TH 

E INITIAL NUMRER'i PRINT *» 
SECTIONS, FROM 2 TO h. YOU 

HAVE'i PRINT "t9» CHOICE, A 

FTER SEEING THE INITIAL'I PRINT 

*9ISPIAY, OF 60IN6 FIRST OR 

SECWD.* 
J 090 PRINT MHEDRETICALLT, YOU C 

AN U[H EVERY &ME>V| PRINT i 
GOSUB Il70r PRINT *KIT MV 

KEY WEN m ARE READY TO PL 

AY.'t SOSUB 1 1 10 
110^ I t RND (iHI ■ PEEK ( - t 

A3a4h IF I ( 121 THEN UOO 
1114 POKE - lAlABtOi RETURN 
1120 POKE Pl,»3i POKE 0U,l90i CALL 

BEi FOR PA * 1 TO SOI NEIT i 
PQie W,127i CM.L BEi POKE 

PI,l90i POKE DU,23St CALL BE 

I RETURN 
J 130 POKE PljeOl FOR K ■ 1 TO 3 

1 POKE »Ur73t CALL BEt FOR P 

A M TO 50) HEJT i I€1T i POKE 

11,2201 PQ«£ AU,233i CALL BE 
/ J RETURN 

1114 FOR ] - 1 TO BiJ ■ 240 / h 
POKE PI,Ji POKE W,h CALL 

BEi NEIT I RETURN 
nSO POKE P!,230i POKE 0U,233i CALL 

BE) RETURN 
niO FOR K < 1 TO 304il ' PEEK 

(CL)i NEIT I RETURN 
1170 FOR P * I TO 30001 WIT i RETURI 

'1 

1100 PI - 7481 OV 7491 BE « 770lC 
L « - 14334111 > CHRI (7h 
eS • 79ltOl > 792ifiL • 793(0 

2 • 794103 ■ J9»iflA • 4li0l • 

1190 ei ' *411 214231 20303}4 1^2341 
32213032131 00^2334031 2 J02 12) 
31320534234132' I IF LEN 161 
M > 44 THEN STOP I REM E 
RTRY ERROR 

1200 DEF FN filj) - VAL ( NIDI 
4U,J ♦ tilUt OEF FN RIJ> > 
INT ( RND IV t Jl 

1210 DlRLNinSn FOR J - I TO I 
Si IfRlUHUh SIT 

1220 OATA 1,2,3,4,3,4,12,23,43. 
36,14,23,34,123,434 

1230 SIN NT (13) I FOR J < 1 TO 13 
I REAORT(J)i mV 

1240 HTA 32,14,t,4,l,l,4lf24,4 
.5, 34, 11*9,54,7 

1230 PRKO) • ' ) 2 

nPRItlOt • ' 4 
5 4* 

iloO PRIUI - " I 

|*iPRt(4> • PR|(niPRlt4) - 
PRI||hPRI<9) • PRKIMPRIIS 
) > *MltttlltllMlittlllltl 
lltfi RETUKN 



COHPUTDI ii VIDEO GAMlS 4i 



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RAINBOW 



Rainbow Passage is a first class 
example oi how a boord game 
can be brought to liJe on a com- 
puter Bcieen. 

A simple strategy gam^* Rain- 
bow Passage makes good use ot 
the CommcxJore VlC-2Crs coloyr 
graphics {ocilities and the addi^ 
tion of appropridle sound effects 
give a dimension which cord- 
board games cannot mafch. 

Your oblective js simply to get 
one of the diamond-shaped 
pieces at the bottom ol the 
scraan to the (op of the board 
before the computef can move 
one of his tokens to the bottom. 

Taking ailemate turns, you 
and the computer each move one 
of your foui tokens forwards/ 



PASSAGE 



either to the squor^ direcily in 
front or throne diagonally left or 
nghl. 

You go first and indicate 
which piece you wish to move. 
Then the computer asks which of 
the three possible squares you 
wish to move onto. The only rule 
you have to follow is that the 
colour ol the square yon move 
onto must be the same as one of 
the colours directly in front of a 
computer piece. 

These simple rules are the 



foundation on which you will 
build a cunning colour strategy . 
Ideally you should select a route 
to the other side of the board 
which will always put the same 
colour directly in front of you, 
taking Care first to position your 
othei three tokens so that they 
are behind the same colour. 

Should the idea of the compu* 
ter beating you prove unbear- 
able, fear not because the 
understanding VI C will let you 
cheat o little. But don I expect It 
to go unnoticed. 

Watch out when opposing 
pieces gel too close to one 
another as the rules allow pieces 
to be taken — although it is not 
always good tactics. Also be 
warned thai if you move a piece 
onto o square o I ready occupied 
by one of your pieces, you will b» 
penalised. 




43 COMPUTER k VIDEO GAMES 




-«k<f^ 



REH RAINBOW PflSSflGE—FOR fl 3-5K VIC-20 
REH <C* 1. R. STONES.. HR- MICRO. LTD 

riMBKJiC 13. 13>. F^iC 13. 13) 

D=?68e £-38460 - B-36B79 POKES. 8 ■ PRINT " ^ 

BL=209 DI =218 ; BK=2e8 S0=368?€ ■ V*36S78 ^ N=36877 

PR I NT '^T RAINBOW PPISSflGE ** 

FOR! = ITOI 2 F0RJ=1 T012 : BK?£< I . J>»RNDC 1 >*6+ 1 . 4 NEXTJ^ r G0SUB9 : (30T021 

REM 

U=0 

FORI^ITOIS 

P=C+89+22*I 

POKEP. 103 POKEP+13. 181 

F0RJ«IT012 

POKEJ+P.80+128 

POKE J+P+30728 > BK5i< I . J > 

NEXTJ, I 

PRIMT"a*aH«« RBCDEFGHIJKL " 

PRINT^ttaaWik.". FORI ^65 X076 - PRIMTC HRfC 1 > NEXT 

PRINT "*r'L£FT* CD*. 17>" "-RETURN 

REM 

F0RI=1T012:F0RJ=*1TD12 F^<I.J>==BK:NEXTJ.I 

fy.< 1 . 3>*BL : FX< 1 ,5)»BL f'/A 1 . 7>"BL f'/A t . 9>=BL 

F?i(12.4>*DI F;iC12.6>=DI :F?i(12*8)*DI :F^<12i 10>«DI 

G0SUB26 -■ G0SUB32 ^ POKESO. - G0SUB72 ■ GOT025 

FORX= 1 TO 12 

P=G+89+22#X 

FORZ=1T012 

P0KEZ+P,FK<X,2) 

30 NEXT2.X POKEN.0 

31 RETURN 

32 PRI NT"a"XEFTfCB*. 19); FORI- 1T044' PRINT" •; -NEXT 

33 FORI = 1TO20 CETFIf NEXT 

34 PRINT"«"LEFTf(;Df.l8)"P0SSIBLE MOVES ARE-" G0SUB47: PRINT PR INT'* 
RE STUCK 

35 PRINT"WI!««»"TflBa6)"*'0UR«MMi10VEl!MMkR0N •*; 

36 GETR* IFfl*="*'THEN36 

37 IFfi»="M-THENRETURN 

38 IFA*>"M"0RR»<"A"THEN36 

39 PRINTfl*:PRINTTRB<16)"«DL "; 

40 GETBf 1 FBf- " " THEN40 

41 PRINTS*; IFBf>*'L*'ORB*C"fl"THENPRIMT"« II", GOTO40 

42 PR I NT : PR I NT " »'' TRB C 1 6 > " ^W , lUlia^KF T . ailfl^R «imsi<"I GHTRmill?" ; 

43 G£ TC* : I FCf = " " THEN43 

44 PRINTC* ' IFC*<>"U"flNDC*<>"L"flNDC*<>"R"THENi:igaii ^o G0T035 

45 G0T059 

46 PRIHr'IOBflM" FORI=lTOl0:PRINTTRBCie>" ": NEXT = RETURN 

47 X*0 F0RI=lT012:FORJ=tTO12 

48 IFF;i< I . J )*BLTHeNL;<=BK?i<: I +1 i J) : QOSUB50 

49 NEXT J. r RETURN 

50 CCX)=L:i:X*X+l 

51 PRINT"r. ONLJ;GOT052.53.54,55,5€>5?.58 



1 
2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 

26 

27 

28 



IF VOU' 



COMPUTER 4 VIDEO OA«a 



i3 



Limited 





operators 

go to Newbear 

Newbear is the biggest Sharp dealer in the country. 



fm THE.MZ nm kardwari 
MZ80-K"48KRAM_ 

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I NftfTW.^ 

I Company . 
I Address- 



Gtrcl* fffl. 127 



RAINBOI/V 



PASSAGE 



J 



52 PR I HT " 4JH I TE *' ; RETURM 

53 PRlNf'IRED", RETURN 

54 PR I NT " yC VRN " . RE TURN 

55 PI? 1 NT " «^URPL£ '■ , RETURN 

56 PRINT"il3REEN"; RETURN 

57 PRINT"3BLUE'N J^ETURN 

58 PRIHT":ff»'ELLOW"J ; RETURN 

59 fls'ASC(A«>-64 B=flSC(B$>-64 
€0 IFC*='*U"THENC=0 

61 IFC«='"L"THEHC=-1 

62 1FC*="R"THEHC=1 

63 IFF/iCfl,B><>DITHENG0SUB96 G0TQ35 

64 F?iCfl,B>-BK 

65 IFfl-l-iTHEHPRIWT"Wri'OU \A\\\\ \ \ !":GOTO105 

66 F/^CR-l^B-i-OsDI 
S7 F»e ♦ FORX=0TO3 I FBK?; C fl- 1 . B+C) =C CX> THENF* 1 

68 NEXT:IFF=lTHENF-e G0T071 

69 PRINT "'i«fl«:HEflT! 

70 POKEN. 1 50 POKEV. 15 00SUE97 
7\ GOSUB103 G03UB2b-GOTQ4b 

72 PRINT-'aiW nV MOVE" 

73 FORI=lTO200e NEXT 

74 PRINT"J81DP " 
?5 2*0TORI = UO12 F0RJ=1TG12 

76 IFFX< I . J>=rrTHEHQ?iCZ>-BK^CI-l . J> = Z^^Z+l 

77 P0KEV.7:P0KES0.RND<1>#128+128 

78 NEXTJ. I POKEV.e 

79 F0RI=11T01STEP-1 
8e FORJ=11T013TEP-1 

81 IFF?iCl.J)=BLTHENG0SUB85 

82 NEXTJ. I 

83 rFK=0THENPRINT'^MiiI''M STUCK" 

84 K==a RETURN 

85 K=0 

86 FORZ=- 1 TO 1 : FORe-0TO3 

87 IFBK?;a + l>J+2>=G?iCG>THENFX<l^J>-BK-FXCI + l,J+Z>=BL:J 

88 IFK = I THENPOKE V , 9 ■ 60SUB 1 03 
39 htXTO.2 

90 G0SyB26 rFK=IRNIir=llTHENPRIHT"*HOORflV I'VE WON!! 

91 POKESO.e rFK=lTKEN:=l 

92 IFK=0THENPPINT"4i»Hfin(1t| " 

93 FORX*lTO10uy NE;:T 

94 PRlNT^aWI 

IhfVRLIIi MOVE* 



'> 






VC^ 



\ 



J 



J 



-/ 



J 7 



J 

(J 

• 

«l:Q»3:Z«l:K=I 

; 

^GOTO105 



95 RETURN 

96 PRINT";9«IHI 

97 PRiNT^^wcr; 

98 FORI-lTOll 

99 PRINTTRB<I6)" 

100 NEXT 
FORZ=1TO6000 
PRrNT"»0a 




<■ 



101 

102 
103 

104 

les 



NEXT 

"RETURN 

POKEV. 1 5 • FOR£=128TO200 ■■ POKESO. S ■■ HEKT^"- 
POKEV , POKES, RETURN 
FOR I = 1 TOSe ; COSUB 1 03 " NEXT RUN 



REABV. 



On patrol atw ve the dam md town you are sworn to protect, yoy suddenly nolice 
huge cpeatuf es with ilraoling snapping jaws coming out of the east . , , 



A swgrm of locusts has 
nothmg on ihe Nibblers. 
And trying to k00p Iha 
little devils in check can 
be a (uUtime occupation 
as th^y try to e<it their 
woy through a dam pro- 
tecting the town lying 
next to it. 

From a bomber plane, 
pot rolling the skies 
above the town, your 
task is to blost ihe Nib- 
blers as th^y swoop over 
the town to bite chunks 
oat at the dam with th^if 
it on -like jows. 

The dam is located on 
the l#ft hand side of th^ 
screen and ployers can 
choose their own Ihick- 
neds — by t be worned. 
Nibblers moke ^hort 
work of Chin dams. While 
yoy re getting the hang oi 
the game it is besl to 
keep the dam ot its thick- 
est. ' 



runsiRiSZ 




Pet m 8K. By Paul Jay 



BEWARE OF... 




From the right hand 
^ide ol the screen com^ 
tha high speed nibblers 
flying at different levels 
randomly generated . 
Som^ attack the dam at 
hs highest point. Others 
ore low-flyirig and move 
in to take chunks out ot 
the town on the way. 

For eoch Nibbler 
bombed the player 
Eicores one point. The 
game is over either when 



you hove notched up live 
points (then you get 
another round of the 
gome) or, if the Nibblers 
ore a better oim than the 
bomber pilot, when they 
bite through any section 
ol the dam. 

Can you kill off the 
Nibblers without destroy- 
ing the town underneath 
^ it's real test oi 
ma rksmonship and 
pome firing can do os 



much damage to th# 
town you are trying to 
protect as Ihe Nibblers 
themselves. 

Follow those gleaming 
jaws across theti flight 
paths and aim carefully. 
Wh^n the plane is hover- 
ing directly above the 
Nibbler drop your bomb, 
then speed back ready 
(or the next creature. 

it s fairly ecisy to shoot 
down (he high flying 
Nibblers but watch out 
for those crafty low- 
flying ones ^ especially 
those herd to spot on#s 
just above building level. 

Once you've got Ihe 
knack ol defending the 
town from the Nibblers 
with a thick dam. then try 
with a thinner one. 

Paul lay has come up 
with an oiiginai gnm^ 
which is stitl addictive 
and enjoyable. 



4ff 



^MPUTEft 



*"^ GAMES 



/ 



/ 



/ 



t 



HI 



jfe FRIMTM" iC=0 EJ=35585 

4t^ INP'JT-THlCKfC'iS 01* rUKS 1*3 wl=H^>RtEST VMiT FRInT".T' 

50 IFOT: :30F-DTC1 TH£N40 

iO !<£M IiiKE 

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Something about the mysterious 
Tarot appeals to ev^n the most 
sceptical ot us. It LS one of the 
anciont arts mankind turned fo 
when superstition held more 
sway than it does now. 

And with its eioborale decoro- 
tiions and air of mysticism^ the 
To rot pack was always predea- 
lined to find favour again in the 
20th Century. Whether ihe sec- 
rets of the Tarot can transfer suc- 
c^sstuUy to that fortune teller of 
our age, the computer, we'll 
leave you to judge. It Is also up 
to you whether you use the 
intriguing progrom as a party 
piece or give it some deeper sig- 
nificance. 

The Tarot puck is the forerun- 
ner of modern-day playing 
cards. There are 76 cards in all. 
divided into 22 major arcana, or 
truEzip-cards, and 56 minor 
arcana cards, with four suits of 
14: cups, coins, swords and 
wands (or sceptresK 

As in a modern pack, there are 
to numbered cards in each suit 
but there are four face cards: 
youth* horseman ♦ queen and 
king (in some packs the knave 



LAM OKI 



hors^ 
Soi^ 

nature 
resent 
that en 
man. th 
that the 
random 
(orces. 

This Tt 
Bgypticm 
card 'Yes 

The com 
enter a qi 
answered b 
have done 
d^<rls out f iv 
lelt. The first 
the past OS it 
lion. The cei 
represents irift 
last two cafdjj - 
— iodjcale tht 

The answer tc 
then detertnine^L 
cards are deoll . 
upside dowr). A 
the bottom of mx^\. 
right way up. 

A card right sidi 
a "'yes" respoiise. u 




3 Eld ktiight replace the youth and 

Some believers in the super- 
itLuoi think that the pack rep- 
sent^ d $y^teifi ol philQsophy 
It embrace® the true nature ol 
n. the universe and God, And 
I the fai] ol the (^ords 1^ not 
lorn but guided by unseen 
m. 

la Tarot program uses th© 

lioii Tarot deck and the five 

'Y« or No'' $pread 

computer first asks you to 

a question thai con be 

ed by yes or nO- Once you 

lone so. the computer 

It five cards from tight to 

fitit two cards indicate 

is £t relates to the ques- 

' Centre, or key. cord 

I ikm presant and the 

itftl — those on Ike left 

th « future. 

f0i iQ your question is 

lined by whether the 

veil right side up or 

t. k bor appears at 

eocb card if II is the 

* side up indicates 
te, i^pside down It 



indicates □ 'no*'. The centre card 
counts twice. When ail (ive cards 
have been dealt, the tally of 
"yes's and "no's determine the 
answer. It is possible to have an 
equal number ol these. U this 
happens the answer is uncer- 
tain. This situqtlon is caused by 
not concentrating properly on 
the cards or not asking the ques- 
tion sincerely — or possibly, the 
person who asked the question 
was concentr^ling on another 
question. 

At times a man or woman of 
some astrological temperanieiit 
is indicated. This does not refer 
to the questioner's. birth sign, but 
means they are o( that sign's 
temperament. 

The gender of the person of 
Qstrologicol temperament refer- 
red to is determined by the posi- 
tion oi the cords. When right side 
up. the youth ond king cards 
mean mole, upside down, 
female. With the queen this rule 
is reversed. 

The horseman cord indicates 
either good or bod situotions. 
Right side up it represents good, 
upside down it indicates bad. 



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4100 )F(I>3lllAtL»I)>0>T>r*l 

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4i20 JF¥{3PR]llT*Ttfi AMSVER (5 *;EHRI{34h*IIO*iCHftl(341«V't 

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4140 INhlT* mn 'ENTER' FfW MOTHER RfASMl'tAtfRETUiitl 



MM 





Ml 





COME*tJTE3t & ViraO GAIffilS S3 



A Fast finger on ttie bomb-bay doors is needed to btsBt 
your way througti the city to a safe landing. 



CRy nob ms in 2K on a StacWr ZX80 or ZXBT. By Stephen Adams 






^ 



This i& ihe gome tor those people 
who thmk onJy ol themsolves 
Flying above a cHy full of people 
you find youisell running out ol 
Juei and not a landing strip in 
sight 

flmmmm! No parachutes 
ehhert 

There's only one thing for it. 
you'll hove )o blow away th^ 
(TtitiTe cily to mak« rt landing 
strip for yourself, U you oi tempt 
to lond belore the city has been 
cleorod thei* you will crash. 

The program produces o clly 
Jrom lines II down to 19 across 
on the screen. Should you wish 
to make it haTder for yourKelf 
alter the first " 1 1' in line numbei 
GO to a gteat^'f number and the 
second to a smaller number. 

The program was written foi 
an 8K ROf^ 7*X80 To convert lo o 
ZKB) . remove lines 170 and 520 to 
improve the picture Both prog- 
rams ore under 2K long, 



10 

;.o 

30 
40 
SO 
60 

7n 

80 
90 
100 

no 

120 
130 



PHINT'TJO YOU WISH INSTRUCTIONS- 
INPUT CS 

IF CODE C$ 62 THEN GOTO 800 
CLS 

FOR X - TO 31 
FORY -^INTiRND*!!!- 11 TO 19 
PRINT AT Y.X.Ji*': 
NEXTY 
NKXT X 
LET AS 
LCTCS 
FOR H- 
FORX 



} 



"> -dBii" 

I TO 20 STEP 2 
ore 31 



130 
190 
200 
210 
220 
230 
500 
510 
520 
530 




140 PRINT AT H,X:AS: 
ISO LET F PEEK PEEK 16398 
160 IF NOT F 118 AND F> 
l?0 PAUSE 100 



1* PEEK i 6399' 2581 



IF INKEYSO"" THEN GOTO SOO 

PRINT AT H,X:CS: 

NEXT X 

NEXTH 

PRINT AT OJOrWELL DONE" 

STOP 

FOR Y - HH TO 19 

PRINT AT Y.Xr« "; 

PAUSE 5 

PRINT AT Y.X;"Q'': 



540 NEXT Y 

550 PRINT AT H.X;CS 

560 LETX - INTiRND*2)-XJ 

S70 GOTO 170 

700 PRINT AT O.IO; '>- YOU CRASHED 

<'^* .H-31 ' X:"POiNTS*'. ANOTHER GO?'Yr 
710 INPUT C$ 

720 IF CS "Y" THEN GOTO 10 
730 STOP 
800 PRINT CITY BOMS BY S.CADAMS' 

810 PRINT " 

B20 PRINT YOU MUST BOMB AWAY THE CITY* 
830 PRINT'BY PRESSING THE NEW LINE" 
840 PRINT KEY BEFORE LANDING" 

INPUT CS ' 

GOTO 40 



^ 




PET HI-RES! 



If you're a PET owner then there must have been a few occasions when you wished that 
it had the graphics capabilities of the APPLE. 

Of course there has been a high-resolution board around for some tinne — but only 
now can you buy one for under £300. The HR-40 HIGH RESOLUTION GRAPHICS 
BOARD offers rrtaxtmum possible resolution (320 by 200), but costs just £149 plus VAT, 
half the price of the competition! Because the HR-40 board was designed and 
manufactured in Britain we've been able to keep the price down without restricting its 
capabilities. And if you're really hard-up and a dab hand al soldering you might prefer to 
wait for the kit version {due later this year) which will cost £99 plus VAT without 
software. 

The assembled board is supplied with 8k of RAM and utility software in EPROM, so 
that PET'S own RAM is entirely available to the user. Though the graphics RAM uses 
addresses normally represented by the ROM sockets UD3 and UD4, these sockets are 
duplicated on the HR-40 board and are software selectable. The board may be installed 
WITHOUT SOLDERING OR TRACK-CUTTING! 

At present the board will fit a standard PET or CBM computer with the nine inch 
screen, but we hope to have a version for twelve inch modets very soon. Write or 
telephone for more details and up-to-date information, 

SUPER GLOOPER 

First in our new range of ARCADE style games for the PET, SUPER GLOOPER will have 
you on the edge of your seal. Your task is to clear the screen of little dots scattered in a 
maze, but WATCH OUT FOR THE GLOOPER EATERS, they're liable to escape from their 
pen and come after you. 

You've got to be very nimble with the eaters on your trail. Best bet is to make for one 
of the four corners where (unless you've been there before) you will find a much larger 
dot which refreshes the parts that other dots cannot reach! Now you've got the glooper 
eaters on the run — catch one and you'll earn a bonus, but you must be quick, because 
any nnoment they'll recover from their shock and come after YOU! 



METEORITES 



An all-action game in the style of INVADERS. Your mission — to defend seven moon 
bases against a shower of meieonies by blasting them out of the sky. If you survive the 
first wave there are five more to face, and then — well you'tl find out! The graphics are 
realty superb — just watch the way that the ground shakes when a meteorite crashes 
into the lunar surface, 

SUPERSOFT arcade games are written in machine code for speed and run on all 40 
column PETs with BASIC 2, 3 or 4. At just £8 plus VAT, they're really good value and you 
won't find a more exhilarating game at any price! We've more great games on the way — 
including some for the 8032 and VlC-20! 




SUPERSOFT 

First floor, 10-14 Catrning Road, 
Wealdstone, Harrow, Middtesex 
Phone: 01-861 1166, 
ASK FOR OUR FREE CATALOGUE! 



56 COMPUTER 6 VIDEO GAMES 



Cifcl* No. 13$ 



ftettve 



,j^tinavc^»wf^ 



otSia«* 



War«- 





As you thrilled to Star 
Wms back in 1978 you 
probably didn't realise 
that you would be able to 
partake in ihal climactic 
battle- agczinat the Eteath 
Staj just thiee yeari 
later. 

The object of this pro- 
grain IB to destroy the 
Death Star by inanoeuv- 
ring your ship away trom 
the crossfire until you 
reach the exhoust vent of 
the artificial planet and 
there you fire your 
photon torpedoes down 
the trench . . . henc^ the 
name of the gome. 

At the beginning you 
are already in the trench 
flying down the corridor 
at your ship's top speed. 
There are laser posts 
located on the left and 
right walls and on the 
floor bottom. 

These lasers ilaah by 
you and fire on your ship 
at random intervals. The 
frequency of the fire irom 
the laser posts is deter- 
mined by the level of dij- 
ficulty you choose* tl-19)< 
with version No. 1 being 
the hardest. 

All three lasers will 
aim independently. Each 
will fire at the mid point 



will be activated, the 
lasers will stop firing at 
you and the end of the 
trench will come into 
view. You now have to 
quickly line up the centre 
(one pixel) of this screen 
so well that the exhaust 
vent is dead centra of 
your sights. 

When you approach 
the last 30 mijes. set youi 
ship close to the centre so 
you can line up the 
approaching target more 
easily. 

When everything is 
lined up (you hope), fire 
on the vent alter the bot- 
tom wall is below the 
bottom of your sights and 
the target is close 
enough to be hit accu* 
rately (the computer will 
prompt you with Fire 
Now!l. 

If you succeed In hit- 
ting your target, you 
must immediately pull 
bock on your joystick to 
bring yourself up and ou! 
of the trench. Failure to 
do this will mean your 
mission ends with you 
and the spacecraft splat- 
tered oil over the end of 
the trench walL 

As you pull out of the 
trench the screen will go 
back to normal mode and 
show a window view of 
your ship moving out ot 
the trench- before switch- 
ing to a rear view show- 



i 



I 



I 



between you and the last ing the Death Stai being 
spot fired upon. So as destroyed. 



long as you keep your 
ship moving away from 
the three laser shots — 
and keep track — you 
should not get hit. 

You will see the 
number of miles you still 
hove to travel along the 
Death Stars surface at 
the bottom of the screen. 
This will be further at the 
more dilfacult levels of 
play. 

When the di a lance to 
go reaches 20, the on* 
board attack computer 



During your flight 
down the trench, 
remember that if you go 
too close to the sides of 
the corridor or the floor ^ 
you will run into them 
and be destroyed. Should 
you go off the top of the 
screen* you will be out of 
the trench and your mis- 
sion will be aborted, so o 
steady hand is needed on 
the controls. 



Variobies used in the 
game are as follows 
f please note that many 
are used more than once, 
or for more than one Jtem 
storage or loop): 
A Leaping 

(FOn^NEXTJ. 
B RND GOSUB ol 
laser fire 
dependant on R'. 
C Screen refresh 

(redraw what was 
erased by ship & 
lasers), 
D X Position of 
upp«r-left laser 
post. 
E T Position of 
upper- left laser 
post. 
F X Position of 

tipper- righ I loser 
post 
S 'T P^ition of 

upper- right laser 
post & 'T size of 
the target wall- 
H X Position of 

bottom laser post 
ft 'T size of target 
wall. 
1 T" Position of 

bottom laser post. 
J Looping. 

h Length of time 

until ship runs 
into wall. 
fl Input level of 

diffi cully. 
T Miles lei I to 

target. 
U FOR^NEXT loops, 
control vai,, 
colour locate vor. 
Ship positioning. 



X 

Y 
Z 





Used as a 
TRUDFALSE var- 
(eg. IFZ ^ 1 THEN 
GOTO . . X 
STRIG Status of joystick 
tngger. 
Joystick 

positioning status. 
Used the same as 
T. 

Looping {nested 
with "U). 
Nested looping 

With V\ 

Wait looping — 
nested with UT 
above. I 



JS 
Zl 
LI 

m 
n 



ooMPtrmi & VIDEO games 57 




\ 

\d 

I 



it m THE TftEWH mttm 

1 ttrti BY Tin MAYS SEMEE'S COttPUTllG 

2 RElf 45fr Sriflitf Avf., Ikwrovij, CA, 

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4 flEH Thtfl tht ATARI aiU MOT iccept t 
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5 T«AP lOifiPf^^lCS OiPK£ TS2,ljF«fOiS 
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66E« to ittrt TRENCH If 



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m IF T(20 THEN HTO IM 

190 COLQA 4}60SUB 5<liC"CMl]F C*S THEM 

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200 BOTO 130 

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310 FOR L>e TO STEP -2tFDR Ll«] tO I 

tPM 712|15IIII«D(J}IIT)||IEIT LI 

324 mm 0,f9,8,LiSOUND l,75,B,LiSOUN 

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7t2,0 

330 IF 11*10 THEN RETuRi 

3^ ^ 'K m ilSH TO RiSK im LIFE 4 

MlN^'iPOKE 7i4,2H 

390 IF PEEKI744)023S THEN RUN 

39S 6ST0 390 

400 SOSUB 3001? ' YW'VE BEEN HIT BV A 




24 IF STRIfitO^M THEN 24 

30 MAPHICS 7tP0lE 732,llCOL0« 2iO«B4i 

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m 

40 F0« A'l TO 2SlPLaT RND<l)lB7+3a,RMD 
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30 PLOT l-5,TiDltANlO 1*3, Vi PLOT 1-2, V* 
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60 COLOR 2)P10T «2,32iORAiTO 62,4BiPL0 
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42 IF DUO THEM If 0)1-3 THEN IF E>Y- 
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63 COLOR 4jPL0T 0,0iDRAiTD D,Ei SOUND 1 
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74 COLOR 2 J PLOT 9^,32] 9RAN?D 94,49}P10 
T 113,24)»MT0 U3,3SiPL0T 143, 9 J MAN 
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71 SOUND 1,44,B,8)PL0T n3,24]DRAUT0 I 



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03 COLOR 4 t PLOT D|7;)DRA«TD M, I) PLOT l 
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T O.OtORANTO 139,791 PLOT l37,4iDRANT0 
2,79(aOT t39,0)WANT0 4,79 
120 COiOR 3»PL0T B4,40»PL0T 79,39iPL0T 

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l*4,8,3 

134 JS-ETICKI41]1F JS"7 OR JS*4 OR iS- 
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140 B-RRDiO)tRiIF JS^IJ Ori JS*14 OR JS 
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130 JF JS"14 n JS'4 OR JB*10 TtH Y"V 
-IiJF ni THEN ^ • OUT OF TRENCH' NIS 
Si ON ABORTED" 'iiEND 

m T*T-0,3iPOI;E 434>,OiPGKE 4S7,23t^ 1 
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402 CXW RHDiniBiFlOT I.YiWANTO AND 
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l*U^W)int3,YfU*RNBtlll3 
404 POKE 7I2,U)NEIT U)6OT0 3t0 
410 60SUB SO^i'' * MIT THE RIBHT NRUI' 
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III 6010 310 

420 60SL1B SOOt*) * RAN INTO THE TRENCH 
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U COMPUTEH & VIDEO GAMES 



RELIVE THE 

CLIMACTIC 
FINAL BAHLE 
OF STAR WARS 



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TIM 

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820 ^ - HISSED" THE UNIVERSE 18 DOOflE 

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B54^ ' THE SMIT IB 800D"!*iFI« J^t T 



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YOU'VE SAVED TNI IMIVCRSE*"*! 

960 ? * » VOU MI5H TO PLAY ASRIN^'mP 

QKE 764,253 

970 IF PEEICI764K>253 THEN RUN 

914 BOTO 976 

COMPUTER k VIDEO GAMES 3S 



^*^m.ru«o»»«on. 



„.n.tn«.WJ«t«"««" 




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HOW LONG CAN 

... YOUAVOrOTHE 

COMPinEJrS CAR, 

, Nai BENT ON 
DEADLY COLUSION. 



Doclg«ims is th^ Acorn Atom ver- 
sion of the "Heod-on" collision 
game. * 

It'« you against the computer, 
can you outwit it? You are driving 
a car around o circular aeries of 
tracks in an ami-clockwise direc- 
tion. 

Bui who is that lunatic driving 
around the aame track clockwiBe? 
An American? A lunatic with suic- 
idal tendencies? No it s the com* 
puter who is out to get you, belore 
you can clear the screen of dots. 

The screen is divided up into d 
^erie« ot concentric circles with a 
number ot crossover points which 



SO COMPITTO ft ^}DEO GAMES 





qHqw you to switch lanes to avoid 
the computer's cor. 

These lanes are filled with dots 
and the object of the game is to 
run over as many dots as possible 
before the inevitable crash. Every 
dot adds to your score at the end 
of the game. The computer can 
switch lanes as well and it will be 
trying to guess which one you will 
be in an the two of you cross over 
each circuit. 

Your safest tactic is to wait until 
the computer has already commit- 
ted itself before switching to that 
crucial lane — but don't leave it 
too late I 



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COMPUTER fe VIDEO GAMES Bl 






^fmKlliAci 




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That old per- 
ennial word- 
guessing game Hangman is 
given o new lease of li(© on 
the Sharp MZ-80K by 13-yeaf* 
old Stephen Davidson of 
Aberdeen. 

Using giaphics and the 
Sharp's musical capabilities, 
Stephen has produced a sim- 
ple program that will help 



while awoy the evening hours 
and witl challenge ond 
amuse youi friends. 

It you hove a phQtographic 
memory you might have to 
ask a friend to program in ihe 
DATA statement words. 
Although there are enough 
there to still keep you guess* 
ing. 

For Ihose of you who have 



MUSICAL MUSICAL MUSICAL MUSICAL 

HANGM 



110 

120 
130 
140 

150 
160 
170 
ISO 
190 
200 
210 
220 
230 
240 
250 
260 
27^ 
280 
290 
360 
310 
320 
330 
340 

35e 

3^ 
370 

380 
390 
400 
410 
420 
430 
440 
450 



by 
STEUEN Dft'ilDSOM 



I 



I 



REI1 
F;Ef1 
REM 
l?:EM 
P:EM 
F:EN 
REM 
REK 

REM 

TEMP04;DIMMC$f25' 

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MUSIC"-D2" 

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VK = 14 : LL*=LEFT f L II . '.'K • t PF' U^TLL t aRB* J H$ 

PRlHT"'l3SCS2B8SS2BnSKa2acai!SHaa*'afiB(KU!'* ";PRIHTtL*'TftB*tH* 

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FORVK=3TOl4iLL*=LEFTI<LIt,VK>:PRINTLL*:TfiBf:Hi:POKE4514,l0*VK:ySR<6e> 

FORDL- 1 TO 1 00 : ME: a '■ HE: :TVI' 

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PRINTLL* J "B" ; TfiB*: SN*: GOTiIi \ 190 
PRINT"IDBBB";:FOR>=:=lTO20:PRINTTftBClS>:" ": NEXT J RETURN 



62 COMPUTER k VIDEO GAMES 



J 



i 



never played Hong man , it is a 
test of your vocabulary and 
knowledge of word structure. 
You ore presented with a 
series of empty spoces- which 
represent a word the compu- 
ter has committed to memory. 

The computer then invites 
you to guess one letter which 
might b^ included in the 
wofd. If the letter is there 
somewhere then it appecirs in 
the correct place on the 
screen . 

If it does not feoture in this 
word then the first struts of a 
gallows are drawn on the 





screen and the poor devil who 
is about to be hung appeals 
for aid. 

Another letter and you 
should have some clues obout 
the word's construction. For 
example: o "G*' as the penul- 
timate letter suggests the 'H" 
would be a good guess lor 
that final place, 

U you guess the word before 
the victim is hung you notch 
up a victory. If not then you 
have his death on your con- 
science. Stephen's victim 
makes very passionate ap- 
peals for your aid. 

One helpful hint is that "E" 
followed by 'T' are the most 
common letters in the English 
olphabet. 



460 
470 
4S0 
490 
500 
510 



PRINT "ID!!3S2C2aSSBSS2S3"; : F0RX=lT08s PfrINTTftB< 18> t " "* ^NEXTs RETURN 

P0KE53554+^^ . aSC 'Hi >-A4:rT= 1 1 3UB=SUB+l = IFSUE-LENc p$ jTHENSU=1 1 

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I r J rp PI WM 



I I 



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559 
560 
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580 
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sie 

629 
639 
649 
659 
669 
670 
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690 

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710 
729 
739 
740 
750 
760 
770 
760 
790 
889 
810 






" : L 1 1 ^ ' IDSQQSSQSSQSCSa " 



=uh>ui*-4::f^l'^V^Uhiuib>dh3 raf=S:>t l^bi)k>iife>3 rf''i'| li^yttai 



a S3 S3 



OH NO •" 



irsrcp a3 89 ssx 



PR I NT "EOS": 
PPIHT rillll 
PRirn y ^ 
PRINT "^ 
PR I NT "N JT 
PRINT't^J" 
PRIHT"^^ 
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PRINT 11 
PR I NT "H 
PR I NT "H 
PRlNT"li 
PFinT'*ll 
PPINT-tt 
PRTNT"B 
PPIKT^W 
PRINT"« 
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PR I NT "M 
PRINT"« 
PR INT "^ 
PRINT "K3 
PRINT"— ^ 



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mttdmrmim* 

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-»llf- 

1 19 i 1 1 

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I I 




Help' I girt about 
%o be ki 1 led for 
c crir^ I did not 
cofx»iit? Cas usual !> 
Only vou cart saue 
H^ by iuessinj t^•l€^ 
the riaht word 
before I <ii't lou^ered 
into a v*at of shark 
ihfe£t£d custard!' 



if INI 

m NftsTv m 
m STUFF m 

3M Mt 



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you help 
OR NJ 



COMI»Ut£H » VIDEO GAMES 83 




SAVE AN INNOCENT MAN 



! 



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1080 
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1100 
1110 

1120 
1130 
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1200 
1210 
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1300 

1310 
1520 
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1340 
1350 
1340 
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1380 
1390 
1400 
1410 



MUS I C " C I DER 1 EDC-C-[^ER I'E'D-CCDER I EDC"C2~D2-E2R2-E 2^D2"C6 " 

GETPif: lFflf-""THEN33u 

IFflJ:="V"THENPETIJRN 

IFfi*="H"THEH40O 

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life' 



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Please save we 



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rFhlt*"N"THENPRINT"IE"iEND 
RUN 

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PRINT TftB'24>?" 
PRINT TAB';24>!'* 
PRINT TflB<:24)J" 
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PRINT TfieC24>;" I 1" 



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MU5IC"C6R2C4RlC4RlC6RliD4RlD4RlC4RtC4RlC4«e4RlC6" 

PR I NT "E Trv f^9iiin "'a"J80T0il60 

DfiTfi "SHARP" t " DESRJ^ I R " , " HELP " , " M I LD " . "l^fHSEL " 

DflTfl "HOPE" * "PEhCE" , "MOTHER" . *"6IUE*' , "LIFE" 

DRTH "FLOUEP" ^ "EARTH" , "SUN" - " STffl^'" , 'T lELD " 

DftTQ " KN I QHT " - " IJORK " . " UORLD " » " SPEED " . "BfIS I C " 

DftTft "PL^V" . "PEOPLE" * "COUNTRY" , "POUERTV" f "SHIP" 

DfiTft "WELCOME" » "P)NT" * "CRT" . "DOG" . "BOX" 

DATfi "DESK" ^ "CHAIR" , "SUMMER" , "SPELL" , "COOL" 

DfiTfl "HEAD " , " RAD I " » " APPLE " . " ORANGE " , " STEREO" 

DATA "BftSE" . "EAR" , "LItiHTER" . "BOOK" * "MONEV" 

DATA "HELLO" * "TELEPHONE" . "RHVTHMS" . "CHANGE" . "SPECIAL" 



U COMPUTER * VIDEO GAMES 



Ttt«RR 



Only witn your help can w© con- 
tinue to makBCompui^i & Video 
Games a worthwhile purchaa©. 

Our continued existence as a 
magazine depends on you^ the 
teod^rs. deluging um with games 
program listings which you have 
invented tor your own mic- 
rocompuler. 

We are willing to pay £10 lor 
«ctch gomes listing we publish 
and for Ihose listings we are poi- 
ticularly keen on there is a 
fiirtlier financial incentive. 

We will professionally markef 
the best games (hot appeor in 
our magazine through high 
street chain stores and if your 
gome proves a winner it could 
mean a flood of loyalties coming 
your way. 

Those are just the starl of the 
temptations we are offering you 
lo become a Compufer & Video 
G€ime& contributor. 

P]e<i&0 check your programs 
carefully before you send them 
into UB. I know the temptation is 
to look at our crecctioiis through 
gold-tinted spectacles, but. just 
before you run it off on the 
printer, check to see that if the 
biggest moron going tried to 
ploy the gome (I may well do so 
when it gels to the of i ice) he 
could do so without crashing it. 

Another please now: Please do 
not send us programs that you 
hove copied from professional 
tapes or spotted in other publica- 
tions, these may be spotted by 
our eagle eyes or they may slip 
through and cause untold piobr 
l^ms. 

We will look more favourably 
on games which show an origi- 
nal touch and have a new 
Opprooch to solving the inevit- 
able problems which crop up in 
mid -game conception. I'm sure 
you know the sort of Ihiiag: thai 
bomb which, when fired, wipes 
out all that carefully put- 
together background a!ong with 
(he target: the space invader 
deserter who decides to disap- 
pear oit the ^^reen and roam 
around In limbo rather than 
returning to the Cray. 

U possible could you include a 



cassette ol the 



game so that we. 
or one of our review team^ can try 
tl out and give us a rundown on 
just how good it is. 

Each month we wilt be picking 
out a couple of programs and 
giving a run down on how they 
were put together. What the vari- 
ables are doing and how the 
programmer has overcome cer* 
tain problems with an idea that 
other readers could adopt to 
their mochines. 

So if you could also enclose 
with your listing, a brief run^ 
down of how to play the game; 
whether it can be played by one^ 
two or more people. 

A brief synopsis of what the 



wet 10 PMOS 

Vdu coufd be in a posilien to treat a 
friend to a w^akeiiit in Puris — 
complete wirii ipendirvg money — 
next year. 

That is ftie priie for ttie beat 
games ptogram ii&rtng sent in to ut 
in Ihe firit 12 monihs of this 
magazine 5 life 

Paris may not be ttie games capi- 
tal of the world faut ri does liava its 
attractions and, when you are 
tpending our money Cm sure ii 
will be all too easy to turn wtisl 
coutd have been 'jott another 
weekend'', into Ihe weekend ot a 
lifefime. 

Come next October a panel ot 
judges will sit down Id play all ttie 



game w about will also be of 
benefit, And finally we would 
like to have o list of what the 
variables or certoin subroutines 
are doing: which part of the 
program makes the trees grow.- 
or how you &ho1 all the deserting 
space invaders and made them 
fall on the poor defender 
instead. 

Computer & Video Gomes is 
an opportunity for Ihe nameless 
thousonds who h<ive been alone 
with a microcomputer for 
long. So whether you havq wri 
ten a massive ad^renlure in 4 
for your Apple, or a IK bat 
ball program for Ihe Sin> 
ZXBK we are woittng 
from you. 

^ Tm sure there mujst 
of easter ways to earn 
but ore there any as n 














best gsmei 
into us Theyj 
the originalii 
of Ihe fac 
computer hi 
prog ram mini 
lation. 

Attar so 
doubtless, 
winner wil, 
Novembsf 

So if 
ifY and 
competj 
barrJPiQ 
whosa wi 

There 
having y 

photOq^^r 

over th 
writsf 
could I 



COMPLrrEB k VIDEO GAMES 65 




HAS anyone played Space 
Invaders with the sound turned 
off? The game imm^iafely lo^es 
an enormous amount of its 
appeal. Even th# f ami liar 
'Ttonk'\ 'Plonk", of the ball 
bouncing backwards and for- 
wards goes a long way to stpp a 
game of video tennis becommg a 
total bare immediately it ii 
turned on. 

The reason for this is not hard 
to explain, a fourth esiciling 
dimension, sound, has been 
added to these gomes which we 
lind both stimulating and satis- 
(ying. Equally exciting is listen- 
ing to a favounte pi^Kre of music 
being played in four-part har- 
mony by your own computer, 
especially if you ^nt^red it your- 
self straight from a manuscnpt. 

This page will deal exclu- 
sively with this fourth dimen- 
sion. 1 intend to describe pradi- 
cal circuits which will enable 
you to add simple sound to your 
own progrom^, make good use of 
any inbuilt sound facilities* con- 
trol external sound sources and 
also take advantoge of the excel- 
lent commercial music programs 
which am becoming available. I 
will aito mention any good 
books or articles on the subject 
which I come across. Of neces- 
sity, several of these packages 
will be dedicated to one moke of 
computer bul I will try and ke«p 
as wide a spectrum as possible. 

TIC SPOKEN WOMS: 

A computer can control all kinds 
of external sound generators. It 
cein cause o ^iren (o sound or a 
starting- gun to fir^. It can easily 
be made to modify sounds 
already being generated by 
some oth&r electronic device. 
eeg. change its volume, add vib- 
rato or change pitch. 

Some electronic organs and 
synthesisers now being mar- 
keted have facilities built in 
which allow Ihem to be directly 
imterf aced to a computer. 

There is also a new generation 
of dedicoted sound making chips 
such as the AY-3-8910 which 
hove been expressly designed to 

m COMPUTEB ft VIDEO GAMES 






m MVD Mi 



i^B 



be controlled by computer. 
These chips contain several 
genera ling circuits which pro- 
duce both musical tones and 
noise. 

In-built registers on the chip 
are filled with control instruc- 
tions by the computer which can 
then forget about sound and per- 
form some other task, leaving 
the sound chip to get on with 
making noise. Sounds from 
three -part music to terrifying 
explosions can be produced. 

Exciting new forms of this type 
of circuil are now appearing on 
the scene, they are the speech 
syntbesi^ers. Individual words 
or phrases con be stored perma- 
nently m memory chips tR.OM.s) 
mounted on an external speech 
board, The words are spoken'' 
under control of the computer 
and whol^ sentences con be 
constructed. Another, more ver- 
satile, method is to have only 
phonetic parts of speech avail- 
able which can then be strung 



together by the computer to 
make an infinite number ol 
words - ^^ ;^ 

- viintD fOR SOUNO^ 

Several micros ore now being 
made which have sound 
generating circuits buill in. 
Some of these are quite sophist)^ 
CO ted and can generate compli- 
cated sounds and music. Others 
aie Intooded only as warnLmg 
bleeps to signify 'end ol line ' or 
"#rror'\ II no direct facilities are 
provided, it is still possible to 
generate even quite complicated 
noises and output them to a 
small amplifier via one of the 
ports. Indeed, even a direct con- 
nection may te unnecessary, 
sound from the computer being 
picked up by a small radio 
placed nearby? Computers work 
al high frequencies and some of 
this energy is radiated. 

How a computer can actually 
make sounds itself is something 
which I Will discuss in futuie 
articles. Here I will just say that 
signals can be produced which 
come out ol one wiie "endways", 
in a serial form. 

Alternatively, signals can 
come out "'sideways", or in para- 
Oel form, using eight wires alt al 
onc^. These eight wires corres^ 
pond to the eight bits of the com- 
puter data output port. \i this 
form of outpul is used^ some kind 
of external circuit will be 
required to change the eight 
digital signols into a varying 
voltage which can be fed to the 
amplifier — a digital/analogue 
(D/A) converter — but this is o 
subject for the future. 

Anyone near the International 
Pet User Group stand when the 
Pet pontologi^l Jim Bulterfield 
wos there, would have heard a 
new program which he brought 
over from Canada (not yel avail- , 

able commercially)^ Full four- 
part music was demonstrated ^ 
together with attack, sustain and 
decay, all computer controlled^ 
In addition the word "Commo- 
dore'' could be "sung" to a scale 
played on the keyboards I won- 
der when well hear the first 
opera written and performed by 
computer . . ., any suggestions 
for a title? 



4 



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COMSERVE VIDEO GENIE 
HOBBYIST PACKAGE 



Thii it a package of all the items we feet e beg inner will need 
when hi» first itftrti to u>« hi» Gefii& 

The offer oompns«« a Video Genie EG 3003 with 12K BASIC. 
1S770 bytet of uief pr^igfernmebie memorv. upper end lower 
cmsm and gfaphics dispfiv. buitt in tape recorder and QWERTY 
kev^bchHrd, with tound kit and |Oy«tick lockett i natal led and two 
jO^itiCkt 

Thef^ *i a u$sj marHJal and a 3 ASIC manual, and a pfOgraffi- 
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There are three catsettes witfi demonil ration prog rami and 
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The leleviaion iv noi included. 

There ii a one Y^gr'% guarantee on parta and labour. 

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1 



Thii machine is fully exparvdable NOW^ a printer an4'Or 
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drivers end ape re Si 00 s^ols- The Si 00 bus ^n the expansion 
interface can take a huge lelection of tioards to cover moat 
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MA2E. lAEYnmm Adventures at £13 a5 each. ADVENTURE^ 
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Tht Space Monster ts a horrend 
out scariti blob complete wth 
spri^mg tentacles. It luiks 
behinKf art arrny of 10 robots ITifig^ 
ing deadly missiles groundwards. 

When It senses viciory over 
ihe ground forces (ydu) it ru^he^ 
Btrthwards tq fmish them off end 
the Mliole thmg cen be a vtry 
nastv eKpenencB espiicialty if 
you have a phdbta aboul spiders. 

A Phihps G70O0 spin<iM from 
Ihe Space Invaders craie. Space 
Merest ers does not have rows of 
■dvini^ing hc^rrors, |U5t the 
rmnstar and his 10 robots, each, 
of which IS equipped with a can 
nofi an4 a shield ip hide behind. 

Your ground forces consist ot 
a larfa- atid easilv hit tank, with 
three reservesandthr^e shields 
Each fltne the munttl^t or his 
mbou stofe a hit you appear on 
th^ tcteeri ^s a vylnarabfe little 
hgyie vvhiclihas lo dash behind a 
shield and ptesa the byttcn to 
put yours f?tf into a new tank Any 
hits am you wtiiie tankJess g^ve 
sn instant wm to tiie monster 

With aach ne^ tafik for whicfi 
you press, one of your remaining 
shields disappears Ttiis rnakes 
the <»pening period of each nayv 
wall critical, for it you lose some 
shields beto<e creating a breach 
in the robot's ling; your large 
tanks ar^ easy to hit. 

The rDboti ind their cannons 
are vulnerable only for a split 
second ^ile their stiialds rnove 
to w^ $pda for them m fire. 

Around £1S from your local 
GTQOO duter 




The TV game of Tennis has como 
a long way tinea thai first simple 
paddlenand^ll version appeared 
in the darkest earner of your 
local and then re-mat aria li$ed in 
I he Ifvmg ro^m. 

T!^e litest Tennis gam^s cap 
turt mitch more of the atmos 
phere of Wimbledon and that 
sport pUryBd by tfii Bjorn Borga 
o1 thiS wo rid 

One such cartridge, produced 
by the US firm of Act* vision for 
use with the Atari VJdeo compu 
ter system, offers a skilful 
chaMeiige which compares 
tavoyf ably with the Atari Basket 
ball game. 

Two smaM figures Whack a ball 
around a ttiree-D simplfficaiiofi of 
a tennis court, rai:kets swing mg 
whenever they are within arm's 
reach of the ball, in an attempt to 
oul-manoeuvfe one another You 
cannot hit the ball out Of play or 
into the net but it is possible to 
misjudge the bounce wti^ch is 
gauged by following the shadow 
of the ball alone ttie court It is all 
too common to find yourself set 
an impdssifaie cKase across the 
court after a sharply^ngled shot 
from a superior opponent 

The skill to acquire is leaving 
the ball until the last moment to 
hit It at an acute angle. 



WIMBLfDON 

wrrmur 

TANTRUMS 



Using this tecfiniqtie it is poss- 
ible to reproduce much o1 the 
eKcttameni of the real ttimg, 
includifif ace serves, serve -and 
voltiy play, base lira duels and 
"running around^ a shot to put 
It into the opposite cornet. 

Another recent launch ffom 
Activision IS Boxmg. This gives a 
view from above a boning nnt as 
two competrtors slug it out 

Points ara scored in ones and 
twos for hits to the opponent's 
head Each hit, rocks him back and 
the best tactic is to trap him 
Sfainst the ropes and s^ore as 
many pointi as possible biforg 
he fights t^is way tltar aga-m 

The defensive boxer will find 
few places to hide in thit ring 
and sheer aggression, combined 
WTth feverish button pummelling, 
ysueHy wins the day Knockouts 
occur when a fighter scores 100 
points. Otherwise it IS two 
minutes o1 frantic action 

Only' two versions here, 
against eiiher a human or a com 
puter opponent, but ttw compu- 
ter often takes e beating 

These two cartridges are the 
first writlen by Activist on for the 
Atari and are being distributed 
here by Computer Games at a 
cost of £1i 9&each More are dye 
soon 



ALIENS IN 
YOUR SIGHTS 

Space themes art still eye 
catchers m the yideo games 
world even though Space 

tnvadars annoyed its heyday m 
1979 Each TV games cemie 
manufacturer makes sure he his 
a few alien titles in his range. 

Space Battle is one of the 
Latest of these offer mgs, running 
on the Database video unit II has 
a" Star Wars' theme to it vnlh 
the pLayer looking through the 
cockpit of his spaceship as a fleet 
ol last flying alien spaceships 
approaches 

As The attackers homt in on 
you. the skill is to dodge their fire 
while fepiymg with you^ own 
lasers when an aben ship is 
within your Sights. 

Points are scored tor each one 
destroyed, with three for a Star 
ship an Alien nets you tve and 
seven lor a Spaceftghfir Only 
three ln#ei aie granted 




Also out now IS « golf caft- 
ridge, played on an 1 1 hole 
course and offering players a 
choice of ciub for each shot 
Among the hazards to avotd are 
rough, bunkers and trees To 
increase the difficiihy of the 
game further you can change the 
Wind sfieads and direct ion i 

Qatabase cartridges are 
somewhat cheaper than the rest 
of ti^ market brands and GoKf 
and Space Battle are £13 each 



niiiAiiHSGEiniES MiiiiSHB nuMSCEnns jeiMSHg 




ASTEROIDS 




If ti t>4Clc to Itre Middle Ages and 
$i«g« warfait tn Stone S^ing. 
Jyit td pfO¥e that t^dtinQEagy 
cftfi tike y^u back ifito the pasi 
11 ^ill is the tuEyre — and stiJI 
satisfy «^l those daMiuctive 
yfQBs 

With Stofia Shfig ^m cok^ld 
toon rivij Olsver CidniWT'^ m ih^ 
mjmtifr^ isti*?! you battdf 

^P0HL redllS ewfli 

■^:3fth.' aii^ a ■->- 

^aet'ca car- ^-j v^/tvd either by 

<u i#at . i k| y^ u r Q p po rie nl's 
IBiVapuYr or smitrng him wah 9 
v^^imad lock. Bptti of thi^se 
tactics Ciu^ Ihi9 gppdsiiion to 
ratiri fen a tow seconds vvhtle 
i^Du Q^i in toine ranging stiof s on 

This cjrtndga is one 0I the 
IstBst bsfctt from Philips for its 
G70OD Video unrt Among the 
othtr new Videopacs ort the 
market are User ^ar and Catch 
the Ball All Philips cartridges 
have a recommended retail price 
of £15. 

FOR PINBALL 
WIZARDS 

VcHi CM ittal a maicii on Ibe 
pin -tall wiiMfd% by practicing at 
tiome on Super Knockout. 

This vafaion of the old 
amusement arcade favourite 
game runs on the Aceirqiiic MPU 
1000 antftftainment centre. Thj$ 
TV te^c of quick reactions and 
CO Of di nation is complete with 
fiippeiSp l>ouncing balls vnd (l4sh 
tng lights - and you can not titti 

Shooting galiery takes yau 
bach to the fairground — except 
thai I he re it no goldfish to be 
won when you achieve a high 
icOfie. It incorpariEes 32 ^et sions 
or the aim ^nd fire game to test 
your eye and timing 

T^Bse two games ire no! 
so imaginative as $ome of 
those already in the Acetronic 
catali>gue but witl help fill m the 
range, The Acetronic cartridges 
retail at U4M each 



VapD-nsmg even -larger clusters of 
meteors before they belt your 
spaceship are the ingredients 
which turned Asteroids mto a 
classic pyb and arcade game. 

It lias survived the con version 
to thi living room, remammg just 
as addictfva and offeting a 
good deal more colour and 
versatility. 

Both the otigmai Asteroids 
arcade game with the hyper 
space button and the more 
recent Asteroids de L\mm, with 
the fhietds innovation are to be 
found among the 66 vursmns of 
Ihe game on the Alan cartridge 

The action centres on a smafi 
arrow ^ head shape d ipacec ra ft . 
controlled by ycu This can bo 
rotated m either direction, it can 
hre at a reasonably rapid rate at a 
pysh of ttie button and for the 
more advanced — thrust off in 
the direction you are heading 

This ability takes some control' 
ling, for art hough you start slowty 
It IS possible tQ whifz across the 
screen faster than any asteroid 
with a very good chance of crash 
ing. The re is also the worry that 
unless ym get back 10 the centre 
of the screen before the last 
asteroid is iest^oyed yoii will 
find an asteroid materiaksinf on 
top of you 

There mB alSiO three special 
features hyperspace. shields 
and flip Hyperspace i>3 a ctassic 
panic button. When destruction 
seems inevitable push the joy 
stick bach and you disappear off 
the screen, o^ly to reappear 
spilt seconds later elsewhere 
There is no guarantee thai you 
Will not reappear on top ot an 



asteroid, though, and that sphT 
second it tales you to n 
orientate yourself may also be 
yoiir last 

Shields last for only two lec^ 
onds They enabfe you to pass 
through the asteroids but 1I you 
put them doivn too soon ii 1$ 
lata I — and the same epphes 
when you keep them on lor more 
than two seconds. 

Flip gives the ability to turn 
]SCI degrees mstanily and hre at 
any asteroids trying to $neak up 
behind yoti 

Om difficulty switcli 'A'\ aliei) 
satelNtes add to your problems 
by ffying across the screen firmg 
at you A large blue one of these 
emerges early without appearing 
very adept at eittier dodging 
asteroids or hnaq accurately His 
little green brother which 
appears more frequently in ttie 
later staps of the game is fat 
more ifccc urate 

The asteroids split m half 
when hi! with those half si/e 
pieces of rock splitting apm 
upon another hit These small 
boulders are destroyed on ttie 
next successful shot but bemg 
faster and more difficult to hit ari* 
wonh more points 

Arcade Asteroids machine 
players will have to Jearn to use 
ttie joystick instead of pressing 
buttons and may need to re ihmk 
thetr tactics but i^therwise this is 
very close to the game they 
already love Whethi?r ttiey can 
afford ttte £34.50. which makes 
Asteroids one Of the more 
expensive cartridges for the 
Atari Video Computer system, is 
anotiier matter 






-^ 



.i 



x^*4i.^ 




CLOSE 

ENCOUNTERS 
OF A 

HAZARDOUS 
KIND 

Take command Of a spoce ship on 
a dangerous mission mto Iht 
uncharted depths of space fiffed 
with hazardous encounters 

In Astrosmash. new from ACE 
for the Mattel I ntelli vision 30 
home video uniL you control the 
command space ship on a mis 
sion into outer space, navigating 
through meteor showers The 
safety of the ship depends on 
your ex peniy aimed laser fire M 
you miss the taliin^ stars and 
they get you mstead, 1I s too lato/ 

you re dead 



/ 




Only three Itvta are yours to 
play With, m ttie way to lottiftg 
up your score, wtiich is boosted 
by the number of nreieofiies 
destroyed 

The beauty of Inieliivision is 
tfie high standard of the graphics 
and re all si ic effect of a thrii- 
dimensional picture The wholi 
game is given a visual de^lh 
which or^nary vNlio units can 
not equal Instead of the stilted 
movements which are an eye 
sore on so many gfames. IntetlnA 
sion graphics flaw when ihey 
move, making them much more 
realistic 

Intellivision really comes mio 
Its own on the sports games m 
which I he players look more Irke 
real humans Von can see their 
leg (Oinis move and flow as if 
they really ire running. 

The latest game in the ranga 
titled Maior League Spons Net 
work. IS Bowling, which is out 
this month The game incorpo 
rates standard bowling rules 
with a bowling alley and sic it ties 
on the screen, all in perspective 

You operate the bowler us*ng 
the hand controllers to get the 
angle of the shot correct. The 
cartridges cost CIS 3b each 

COMPtjTEn & VEDEO GAMES 71 



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GAMC COMPUTCAS 

Ataii 7600 plut CChnitril C9Si.4&. <j«Jfw 4.«p HMJ^jn Er^n 
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PLAYING Adv€^ntuie on a main- 
trame comptJtdr is d lough nut to 
crackjaking monthectnd months 
to solve. But that doesn t stop 
people sneaking into the compu- 
ter room aiter dark lo tackle iIp 

Most latge mokes oJ comput- 
ers can ruli a vanity of games 
but Adventure is the most popu- 
lar and best auited. It is much 
more of m test than a micTO based 
game because of the massive 
storage capacity mciinirames 
have, extending the vocabulary 
into the thousands. 

Many more deto:ils ol scenery 
are aval table than on a micro 
and thei^ ate lar more places to 
get lost in. mor# treasure lo find, 
more dangers pots and hassards 
to avercome. 

The principle ot the game is 
the same as any adventure 
game You have to find a certain 
number of treasure pieces which 
ore dotted about an oreo 
littered with dangerous objects 
and evil beings. 

Not only do you have to find 
th^ treasure but there is also a 
points system clocking up youi 
score. You get 10 points for find 
mg a piece of Ireasure. 10 points 
for gj^itiiag it safwly back to the 
store room, one point for each 
room you manage to enter but 
you lose 10 paints if o piece of 
tieastire iB stolen by pirates, 
dwarfs or trolls, who are all out 
to trick or trap you. 

Usually the lop score is about 
the 350 mark: obviously you must 
try not to give away any poin^ts 
while you're on the treasure 
trail. 

When you get down to a seii- 
ous game of Adventyre, it is best 
to keep a record of where you 
have been in mop foim. 

The sooner you find out the 
boundaries of the area in which 
the treasure is hidden, the sooner 
yoy can positively start looking 
lor it by gal hex mg information 
and clues, fie brave and try 
going in every direction poss^ 
ible and in to every building 
1 whether it's a safe looking barn, 
an evil smelling dungeon or a 
mysterious mist shrouded lower). 



What It bails down to is that 
the game can only successfully 
be played by trial and error, frus- 
trating though it may be. 

A noteworthy tip in case you 
foolishly set foot in the 
labyrinths of underground 
moles is to l^ove behi nd some of 
the least valuable clobber you 
are carrying. By leaving a 
marker behind youll save q toi 
ot lime aimlessly walking 
through corridois and tunnels 
which look exacily alike. 

li you leave o point er„ say 
some food ^which always 
attracts the malicious dworfs) or 




^tnm fi^jfff 



your water iX5tiie or a couple ol 
coins ipTovidjng your lamp isn I 
going dim in which case you will 
need them to put in the vending 
machine for new batteriesL you 
cnn quickly establish a map of 
the maze and get yoursett out 
safely. 

Console yotirsell with the 
knowledge thai the computer is 
not always os tight-lipped as 
you may at first think For 
instance it gives away some 
clues, subtle as they are. but 
your knowledge ol classic fairy 
tales comes in handy 

To find any piece of treasure 
you have to follow each step in 
the correct sequence. Youll be 
hitimg your head against a wall 
ii you get to a si age when you 
know you should be able to use 
the lantaliz^ingty near object to 



obtain ^ome treasure but you are 
lacking a vital item. An ofavioug 
example is the bird chirping 
happily in the sky. You know you 
need it for something but forgot 
to pick up the cage to catch the 
flighty creature in at the previ- 
ous step- 

Before. during ond alter you 
experience a close encounter of 
the kind you would rather not 
have, with trollSp dwarfs, wizards 
and elveSp you are bound to have 
the opportunity of picking up a 
variety of objects. Sbme of these 
are worth having, the lamp, 
money and weapons ore good 
bets for a kick off. but some are 
jus I put there lo lead you astray. 
It's up to you to decide which you 
are going to need. 

And unfortunately its only 
your good ludgement and luck 
which will reveal Che three or 
tour magic words which ore vital 
for finding the tieasure. Olten 
you ]ust stumble ogains! them, 
and sometimes you're given a 
clue in the form ol a riddle which 
you have to pu^le out. 

There are going lo be times 
when you will wont lo beat up 
the computer yet the only way to 
vent your anger and frustration 
is to swear at the machine. It 
only mokes you feel even worse 
l! will either answer you back 
with whatever escpletive you 
usedi or it will chostiseyou with: 
"tutp tut. Mind youi langucige* 
pleased 

At the end of the game, either 
when you have found all the 
booty Ol been killed or commit* 
ted suicide (yes. even thaf*s 
possible if you can'^t lake the 
strain), the print out will give 
you an assessment of how well 
you fored, along with your points 
score. 

tfs |u^t as well there are no 
hard and last rules to stick to. It 
there were it would be far too 
easy ond the fun would be taken 
out of it. 

And once you have been 
whisk&d away by a crowd of 
laughing elves mto the sunset 
hoving found all the treasure 
there is little left to hold your 
attention 



COMPUTER ^ 



GAMES 73 






pw 



SSpp^ 



Whilt it is not difficult to loarrt 
ttiioggh Biiic in a ihori time ED bj 
ibtfi tQ writt shDfl. simple pm%- 
riint. the language waf not 
ifitti^dtd tu ti« vtf d for Itrgt. coni- 
f licaiwd prppams. 

In fact it wii dftsignad balofe 
modern slrucmrtd progrtmrniiig 
ta€llnii|ii«s had bteti formylated. 
At mm of ya ir« wmuk with Baiic 
on our hom# c mprtan we have 
IJttIt choice but to write oui large 
fKograms in this language, 

My aim m this series it Id pret- 
Mt iliiorithms and pfogrnmming 
methods which mike tt easier to 
writ« programs which worli prop- 
ifly, Whtfe routines are given in 
Basic riiBY will be wrtnen with a 
mininiaf itibsei which should be 
eaay to undarstend but i» not 
to follow ttie synlaK 




requtroi for My tpetific maphina. 
All qa i eailotia , leemingly unsolv* 
able programming problems, and 
ftuggesitons for topici to be 
covered will bt warcomed. This 
series is intended to help yciii prof- 
rem afliciently and the content of 
future articles wilf be gawerned 
large If by the comments and ideal 
received^ 



^ftflCARO 



Moflt games programs use ran- 
dom numberBp so it is important 
to know something about how 
random number iunctions work, 
what iheif Hmitations ar@. and 
how to use them efficietitly. The 
RND function in Basic gives 
pseudo random numbeis. colcu* 
la ted by a procedure which is 
designed to pidducre ce sequence 
with no easily-detectoble rela- 
tionship between succefisive 
numbers, and with the numbers 
spread evenly over their range. 

The method us^ on the ZX-81 
and described in the manual is 
typical of the pseudo- random 
number genera cors used in mic- 
rocomputers. The ZX~81 keeps a 
number between t and £5535 as 
Q seed for Ihe random number 
and o random number is pro- 
duced by first calculating a new 
value for the seed as 75* (seed + 
IJ- I (taking the remainder after 
division by 65537 if the resuli 
exceeds fi5536]i and then return- 
ing the new seed divided by 
65536 to give a number between 
Oand 1. 

Th ose pseu d o- ra ndom nu m- 
bers are good enough for mo$t 
purposes but as the same se- 

74 COMPUTER & VIDEO GAMES 



quence appears every time the 
machine Is switched on il ie 
often Tiece^gary genuinely to 
randomise the starting value. 
Some Basics make a provision 
for this — lor example. RAND on 
(he ZX-81 and RND(-TI) on the 
PET — which initialise the ran- 
dom number seed Irom the 
number of frames displayed on 



the TV but on some machines the 
programmer must insert his own 
routine to ensure a true random 
start ior the BND tunction. 

A games program will usually 
begin by printing instructions 
and waiting tor a reBponse from 
the player before starting the 
game. This is a convenient point 
to insert the randomising, and a 
simple way to do it is: 

100 PRINT ^ PRESS ANY KEY 

WHEN READT' 
IIQ GET AS 
120 im: X - END 
130 IF AS --THEN 110 



When the program continuets 
the next value used from the 
random number sequence will 
depend on how long the player 
waited beiore pressing a key. 

That, however- is not very 
satislactcy for two reasons: first 
Basic is rather slow and normal 
vaTiations in the speed of pres- 
sing a key may produce only 
three or four starting pomis; and 
second someone sitting with his 
Hnger on a key while the instruc* 
tions are being printed will 
del eat the objecf of the routine. 

The second objection con be 
overcome in Basic, by adding an 
extra test at the beginning of the 
routine, but to ensure a wide 
range of starting values for RND 




DO UNtIL 



€LMS* 



d machine c&de subrotJtine is 
advisable, 

Aiioth£T piohlBtn arises with 
random numbers wh@n you n^^ 
all the numbers to be diilerent- 
Shuf fling a d^ck of cards ci^n he 
regarded as a problem of this 
kind, requiring a routine lo gen- 
erate o list containing ihe num- 
bers 1 to 52 in random order, 

When only a few numbers ore 
needed it is simple enough to 
test each number as it is gener- 
ated and discard rhoite which 
have already been used. With a 
longer list required this proce- 
dure can take a long time and. 
even worse, with a bad random 
number generator it mcry not 
term mate. 

A simple way to peHorm a 
shuffle is lirst to till 0n affoy 
with the numbers in order and 
then work through the orTay. 
eMchancfing each element with a 
randomly -chosen element. A 
simple routine to do this is: 

10 DIM A[52} 
100 FOR I ^ 1 TO 52 
110 LETAd) - 1 
120 NEXT I 
130 FOB I ^ I to 52 
140 LET R - 1 + 52*iHTiRNDJ 
150 LET X = A(I) 
160 LETA([J - AIR) 
170 LET A(R) - X 
180 NEXT I 



5J; IN CONlKUi- 

Structured programming is a 
method of program design 
which, used properly, produces 
programs which are reliable, 
easy to maintain, and easy to 
read. A fundamental principle of 
structured prc^ramming is that a 
program should be constructed 
from modules willi a single entry 
point and a single exit point, 

Any program can be written by 
refining the modules $uccea* 
sively to include more and more 
detail using only three control 
strticturesr SEQUENCE, IF .. 
THEN .., ELSE ..., and DO . . . 
WHILE . . . Two additional con- 
trol structures, DO. , . UNTIL and 
CASE, are useful in practice bui 
are not theoretically necessary. 
Flowcharts for these control 
structures ore not available in 
Figure one. 

An important property of struc- 
tured programs is that program 



flow goes straight on from top to 
bottom and never jumps about 
the woy Basic programs do when 
GOTO is used indiscriminately* 

There are many reasons why 
structured programming is 
impossible in Basic but prog- 
ramming in Basic can be mode 
easier by using structured 
methods as much as possible. 
Although most of the funddmen* 
tal control structures are not 
available iti Basic it i^ possible 
to obtain the some eff^:t using 
the language. 

SEQUENCE )s no problem, as 
it is just o matter of one block ol 
statements following a not her. 
and CASE corresponds lo the 
Bosic statement ON variable 
GOSUB line no, line no . . . 

DO . - . WHILE . . . and DO . . 
UNTIL can be implemented in 
Basic with IF . . . Then . . and 
GOTO- The example shows E>0 
. . . WHILE . . .; DO . . . UNTIL . . , 
is similar, but the test should be 



u 



♦f 









k 



♦ ♦ 



9* ♦;?♦ 
9 a 




made after the DO procedure 
instead oj before. 

99 REM WHILE 
100 IF conditjon THEN 120 
IIQ GOTO 200 

119 REM DO ROUTINE 
STARTS HERE 

120 , > , 

189 REM DO ROUTINE ENDS 
HERE 

190 GOTO 100 

199 REM START OF NEXT 
BLOCK 

200 ... 

A tew microcomputer Basics — 
including TRS-80 Level 11 — 
allow IF , , , THEN . . . ELSE ... 
but where it is not available it 
can be implemented by using 
ON variable GOSUB line no. line 
no. The voriabte must first be set 
to a value ol 1 or 2 depending on 
the result o! the IF test. The 
straightforward way to do this ia: 

100 IF condition THEN 130 

109 REM ELSE 

1 10 LET X = 2 
120 GOTO 140 

129 REM THEN 

130 LET X - i 

140 ON X GOSUB line no, line 
no 

Another method is to use the 
feature of some Basics which 
allows the truth value of a condi- 
tional expression to be ossigned 
to a variable, for example; 

100 LET X = (A< B) or 100 LET X 
= (A-B} 

The numerical values used to 
represent "true" and "false" vary 
from machine to machine, the 
most common being - I and or 
and I . If true is represented by 
- 1 and false by we can get IF 
...THEN ... ELSE by: 

100 LET X ^ condition 

1)0 ON X- 2 GOSUB line no, 

line no 

Before you use this 

method you should, of 

course, check that 

your Basic allows 

assignment ol truth 

values and find out 

what values ore used. 




♦ SOFTWARE * PERIPHERALS 
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(FULL RANGE IN STOCK) 




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by Andrew Hewson 



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MJEW^OM CONSULT AMTS. rORAHAMf aOSI ftUWVMt 



I 
I 



a«ii No iM 



WHY DONT YOU PLAY A ROUND 
WITH OUR NEW GAMES? 



Now a whole world of skiJled cntertammenr is at your fingertips. 
LOSURE GENIUS introduces games like EXPLOSION, DEATH, 

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Ufilikc mosi other computtr games, you can ptay these with partners 
and opponents and you can piay WORMS againsi your own micro. 
Invented by some of Britain'^ brightest experts, they are a challenge 
you can't pass up or put down. Don't let aU work and no play make 
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E^h game is availabte on floppy disk for only E15,00 plus VAT from 

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7E COMPUTER & VIDEO GAMES 



C4rcfc*Pl£i. J at 



■mtEITH CAMBELlI 



ADVENTURE ib arguably the 
most populor game &o far 
adopted by the computing 
fraternity. It tempts the data 
processing professional lo give 
up his lunch hour to search for 
hidden treasure in the main- 
liame and is also finding its way 
onto many a home and even bus- 
iness miCTOcompuler, 

It IS a game which generates 
fervent enthusiasts, t was stay- 
mg overnight at Brighton on a 
business trip and, to pass the 
evening, walked along the sea- 
front, finding myself eventually 
in a little back street pub. Aimed 
with a pint. 1 found the only 
spare seat next to a young man 
and started a conversation, dur- 
ing which it emerged that I wrote 
tor a computer magazine. 

'*I know nothing about com- 
puters'', said my companion, a 
microbiologist, ''but I suppose 
you have one of those Pet 
things". Whereupon, d fellow sil- 
ting on a nearby bar stool inter- 
rupted. "Are you in computing? I 
am half of a software fiim writ- 
ing commercial software for 
Pets;'' 

"I'm a Tandy man myself/' [ 
told him, feeling that was almost 
like ^ declorotion of wor. A leng- 
thy discussion followed on the 
relative difficulties of pro- 
gramming the Z BO ogainst the 
B50Z, Neil, our biologist, yawned 
and sipp#d his tequila. Until the 
conversation turned inevitably 
to Adventyre. 

"fsr^'t thot a computer version 
of Dungeons and Dragons?" he 
asked, suddenly awake again. 
From that moment, the only lull 
in the conversalion before clos* 
ing time was when a round was 
bought. Three enthusiasts couid 
not b© stopped. 

Adventure did originate from 
Dungeons und Diagons It has 
appeared on many mainframe 
computers around the world. The 
original was written in Fortran 
and required 64 K storage plus 
disc back-up. In this age of the 
micro, o fairly complex Adven- 



ture consisting of about 30 loca^ 
tions and a similar number of 
objects can be loaded into tGK of 
RAM, 

Scott Adams scarcely exagg- 
erates when he proclaims in the 
instructions appended to the 
Adventure series, that the player 
is able to experience an adven- 
ture without leaving his choir. 
For the Adventure formula is a 
game suited ideally lo comput- 
ers. A good Adventure can be 
totally absorbing and the danger 
of making a false move con 
become very real, as can the 
excitement ol discovering a new 
exit or chamber. 

So, for the uninitiated, what is 
Adventure? The gome consists 
usually of a logical network ol 
locations which must be 
explored or traversed. The loca- 
tionfl can coiitain objects, 
creatures^^monsters. and/or 
treasures, which may be carried 
and manipulated in sometimes 
otecure ways to achieve the 
objective of the game. 

That objective may be to col- 
lect treasures, to carry out some 
specific act — like prevent a 
lime- bomb from detonating — or 
to escape the network 
unharmed. That is achieved by 
entering instructions in plain 
language, usually a verb fol- 
lowed by a noun — e.g., go 
north, take keys, kill dragon. 

In some games, movement is 
achieved by means of arrow 
keys. An Adventure is olways 
words but sometimes may be 
augmented too greater or lesser 
extent with graphics. 

The player — unless he cheats 
by listing the program — has no 
way of knowmg how many loca- 
tions or objects exist but can plot 



a logical geo-schemotic map of 
the network to aid him in his 
travels. 

Most Adventures oie written in 
source code, rendering them 
more difficult to analyse by list- 
ing. or disassembling, than to 
solve. 

Machine-code games, as well 
as hoving the advantage of 
space economy, have an appar- 
ently instantaneous response 
adding to the dramatic effecl of 
surprise. 

If your machine-code Adven- 
ture is baffling you and you want 
to cheat, try breaking, re-settmg 
or quitting the game — without 
turning off — and then enter this 
from command mode; FOR 1 
(start address of user RAM) TO 
(end address of user RAM): 
PRINT CHR$ PEZK (!);: NEXT 

That will not give you an 
instant solution, but all the dis- 
play able characters will scroll 
up the screen, giving you a lew 
good cluesf 

The most difficult part of writ- 
ing an Adventure is to estoblish 
the theme and the plot, ll is 
really like writing fiction, as it is 
necessary to hove some theme 
which will hang everything 
together^ white absorbing the 
p layer- 
When you have hit on a theme, 
ask yourself if it has been done 
before. Once you have estab- 
lished your theme and plot. 
roughly draw the map of the 
network and place your objects. 
Think through your plot in some 
detoili making sure you have an 
in-built impossibility — e,g,, you 
cannot get the axe until after yoy 
hove chopped down the tre#. 
Then think around some of the 
programming difficulties. I will 
start giving you tips on them 
next month. 




fOYSKDiniEBE 




UGHTS, ACTIOh> 
CUE SIMON'S BIC 
BROTHER 

Th« iPitsica! fntunory gimi 
Simon, h8i a big brotl^ir out this 
Dinstmas 

Super Simon is a if^luxO Wf- 
51071 af the Simon gam« which 
ma lie ^uch 9 big impact m tht 
shops lasf veil. This or^e^ has Nv« 
difftfini games to piav and up So 
iff ht ptaple cjn \oin m. 

Super Simon is square shapid. 
unlike Its pi^de cesser and has 
stlectors for tht game vd nations, 
tha numbar of prayers and the 
ifcjH lev«i Prass the large col 
ourad lays 10 follow iha s^&qu 
anca Sitpar Simon's mamorv 
throws out and se^ how \m§ it is 
befoie you gel the saquaiKa 
wrong. 

Or a mora difficutt gama is to 
try and f&Uow Sup«r Simon at the 
sami^ time as its colours Light up 
and It btares out its musical 
tones 

For mora than one parson 
Suptr Stmon can cleverty piick a 
person to follow his sequence by 
selecting one of tha ftui colours, 
red. yeltow. green or blue. 
assigned to each person. 

One of Its spectaf features. 
wtiich Th^ original ^oes not have. 
IS an arbitratiqn key. If ton- 
trpversy develops about the 
result of a game, at the touch of a 
button, Super Simor^ wi\i indicate 
tha Winner by (lashmg EI10 right 
coloured key 

Super Simon is buih to last in 
robust plastic panels to witti 
stand h-aavy hands. Vou should 
easily be abte to find the game m 
most Toy shops and depaftment 
storas It costs anything bat 

Apart from the origifial of this 
game there is also a baby 
brother hand heid Pocket Simon 
which selEs for £9^14 Simon 
ilself now costs C1&O0 and is 
still 1li« most poputar of tha trto 

71 COICUTER ai VIDEO GA»SS 




DIG FOR VICTORY 

Tcy manuftcfyrei's are still cashing in on the sptce imi^der:^ 
bind wagon 

The hand-held Earth Invaders toy is no eKcaption It first 
e«me out at the begmnmg of this vear as a follovv up to 
Com pillar Games siiccassfui hand -held version of ^pac^ invad- 
ers, called Gatahy rnvaders 

Ftying saucir sharped and made ifi blue and white plastic with 
a ^rge display sc^eeri, the gdrne has a miciochip msjrie 10 
program m different dithcutty levels 

The aim m Earth Invaders ^s to defend your ganenl from 
in^a^dmg aliens which move around a grid of squares^ There are 
su squares which ara safe giound If you are caught m a square 
whtfi an ilJtn moves in, you ara deail. 

Vour only defef!{:e is comphcated and rthes on quick th^rkkmg 
and concentration as well as dexterity You have to dig holes in 
the sqiiares around you and wait for an alien to land m one. 
When he does the red aliens can only N kiFfed by pressing 
both the bury button and the correct directional button But 
you m4ist do it as soon as tha alien lands in the hole or ha will 
escape end destroy you 

You get points lor each alien you successfully destroy end 
bonus points lor eacti phase pf the ganw you complete 

Earth Invaders costs £26% and is hatteiy operated 




BllMffllinPlMinGDBTB! 
KBPf 

[Mf TK LOGIC OF 
'h/ COMPlfTERISEO 
' MASTERMIND 

The populai lugiidi deduction 
peg game of Mastermind wis 
always an ideal candidate for 
computen&aiion 

Mastermind suffered from 
needing two people to ptay but 
being deadly dull for the one tfist 
set the problem, who could only 
tap h^s fingers while his partner 
Ihoueht through the numerous 
permutations needed to come up 
With tHe right answer 

InvECta's Supefsonic Electronic 
Mastermind turns it into an 
absorbing one player game with 
the computer taking oirer the 
part of the problem tetter — and 
no distracting table tapping 
either! 

The game comes in a htnd^ 
held fbrma! and resembles a cal 
cutator With a liquid crystal d^s 
play and a smaJI keyboard on 
wtiFch To enief your guBSses. It is 
compact enough tp make a good 
travelling companion and conies 
complete with a plastic cover to 
hold yoyr scorecards and a biro 

Skill levels metn ytnu csit set 
problems to fit your bram's pow 
ars of deduction at any given 
|»me- Ffpm |ust three numbars 
for tho$^ early morning sessions 
to a full SIX when you feel ready 
for a biggier challenge On the 
right hand side of the LCD are 
two columns which tell you. 
hrstly. how manry of your guesses 
were correct and how 171a rry 
ware correct and m the right 
place 

When you feel you huve hi! 
upcin a sequence which will 
lurther your knowledge of the 
hidden n umber, hit the "try" )i«y 
and tha m^hine ctneckt your 
effort against the code and 
rtlurns its two clues You mike a 
note on your score pad, try a bit 
ot deducing and then have 
f«nQiher go The machine keeps a 

^ck of how many tries and how 
long It took you to work out the 
answer 

Supersonic Mastermind is bat 
tery powered by two WP7s ?no! 
supplied} but also runs off the 
mains Mn4 costs £19 9S. 



\\ 



LOTS MORE VROOMM! 



Thtr^ £ a mw iDCik id those 
model pfanes which children can 
whirl afoynd thQir heads whilsl 
making "Vfrnoooomm" and 
Neeeoooww" sounds 
For $ smrt these mtcrop races 
sor dontrollcd craft make thair 
own Vrrrfoooomm; noises, th&v 
are t^yilt along spaceship Ifr^es 
and when pointed al one another 




WATCH OUT! NEW 

EASTERN 

ADDICTION 

The Japar^se have mov^d on 
from digiial witches to produce 
an incredibly addictive series of 
piiM watches 

There are six m ^he aenes. 
each about th« si;e ol a credit 
cifd and designed to fit m )fOut 
pocfcat — bul If IS unUltoty ttiat 
tinv wilt sptnd much time thera, 

Tlie liquid crystal dispfay 
icreeiTS sh^w The gamt m pvo^ 
ress and provide acciiratt time iit 
'he pnass ol the bytton. 

Although compulsive the 
lamis are rfthef morbid in 
lature. with titles like fire, Ver 
inin. Headache, Manhole, Lian 
and Ball In the geme Fire; tor 
ej^mple, ihe mm is to catch 
babte$ — as they leap from a 
ftiming building — oi^ stretchers 
If you miss, the baby dies and is 
chalked up at the top of the 
screen as an angel. 

lacti game has two versions 
— fast and slow depending on 
your skill You get three lives and 
as )ong as yOu have a life left you 
can work yp yout score Trie tiny 
toy records Itie top game score 
at the press of a button 

If the idea of burning babtea 
does not appeal to you, try sav 
ing a pajnachutist friiim dropping 
into a shirk infe$ted sea, or sav 
mg i man from being beaten to 
deatti by liieavy tools raining 
down on his head 

U& IS only safe wtien he is 
inside one of two doors on eittier 
Side of the screen and you fee a 
point whenever he goes inside 
8ut beware, just when you think 
you are safe the door slants shut 
in your face 

The original games are only 
displayed in black and white and 
cost £17 95 The iatest vershons 
come la cotouf. are slightly larger 
and more eicpensive at C21.95 

The series is c:8lled "Same and 
Watch" and ts marketed by Com 
puier Games through a variety of 
electrical and toy shops. 



INVADERS ON HAND 

Tlie original haitd4ield Space Invaders whicli hicked off the 
cra^e m the home is siiJJ seJIinB well and looJis set to do the 
tafna Ala ChriftiiiM. 

Tlw plastic buiH gaiaw mm iulpmf to imtlate ^e ^k^ 
inmitrs arcade gaiNa ami tmk hi mi tts succesi Allfif A 4 
Ha^fti of Uio««tvr broiiBlit it iitie this ceuairy other ntaniitw* 
urara iwik Np the idai 

Tin •lifBi rein down in rapid ucceiiiiiii and becomi 

filter and f after — and mora numerous -- at ttie gaine 

progrefses There are two I e vets. Iw in ''tofiiiiier'' and the 

expert and the g»ma cones coiwlili itfWi the (ainiliir 

grunting sound effects. H rttns oM th HP? batteries. 

Ottw reJ^ivis in the Space Iniraders family includa Aitio 
Immtort. In rtiis you have to defend ynurtelf (rom aliaits, 
booibi. mi tail at. falaxy sliips end moviitg nan. 



TH PORTABLE 
GANiS CENTDE 

The versatile hand held elec 
tronic game centre Micro vision 
has had two eiftra canrtdges. 
iilded 10 the range for this 
Christ mes. 

These por table games follow 
in the hand-l^eltf space invaders 
vern but are not as iophisticated 
There is a mother" umx with a 
certndge which you have to buy 
m the first mstance 

Uke the T V games centres 
th€ idea ^s to slot cartridges lor 
different games into tt?e master 
console which is microprocessor 
bised. 

At the top of the master con 
sule IS a sm^]\ screen on to which 
the oirtiidge is fitted The games 
Ciifriiitly available include 




Blockbuster. Shooting Star, 
Ten pin Bowliftg. hn fiaU. the 
popular itriMgv fame Connect 4 

and tlii liltit additions, Sea 
Duel »nd St>Ace Blitf lyet another 
version of Space Invadersl 

Each game cartridge has a dif 
ferent screen to fit m with the 
game's theme and is ready for 



accurately, ihey actually register 
a laser beam hit 

Dads will be as intrigued by 
these new generation models as 
the 7-1 4 year old youngsters 
which they are designed lo 
appeal to 

Celled the Starbird Avenger 
and the Star bird Intruder the two 
ships come compleit with a 
cardboard cutout ^'itar bate" 
with a target to fire at from your 
ship 

They an made ol tough |iliiti€ 
10 wiihsiand batiermga from 
over-enthustastic owners mi 
look like spaceships from out of 
ihp Star Trek and Blake's ? T.V. 
senes 

Both tl^ Avenger and Intruder 
have laser beam weapons and 
when the ship is pointed it the 
star base tatgeis it makes an 
exploding sound. 

The ship^s engine noises are 
realistic and you can engage in 
dogfight battles with one person 
ho f ding each ship Wh#n you 
point the ship's nosa upwards 
the engine sounds as if its power 
IS increasing to full throttle 
When you point the shi{i down 
wards, the engines slow down id 
come mio a landmg 

II It IS 'hit^ by the emsmy, your 
engine dies lor a second or two 
before being st^^rred buck, into 
action Both cost £15 and are 
from the stable of Mi] ton Brad^ 
ley 

Wtiat makes These toys stand 
apart from other hand rietd 
planes, that you can buy, are the 
sounds Mo other toy has the 
same sound effects incorporated 
in them They run on a 9 vott 
battery (not supplied) 

instant action when slatted into 
tt^e mwn unit The actual unit ii 
quite large and made of strong 
fa last ic The manufacturer, Mitton 
Bradley, says it will easiiy go into 
a pocket but I ha we my doubts It 
wtH certamly ht into a briefcase 
wtchout any trouble 

Aittiough there is nothing e^se 
kike this game on the market, d 
does not Irve up 10 its cem 
pelilors in the hand held field 
Because the actual screen is so 
small the game is Irmited and 
sometimes difficult to see 

Vou can either play by yourself 
or with another player. The initial 
cost of the console and cartridge 
rafiges from C2S to £39 while the 
cassettes alone §r^ C9 Micro vi- 
sion can he found in most 
department stores toy sections 
and other shops sellmg electrical 
Eel sure goods. 



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IF YOU are thinking of ocquir* 
ii^g a homa comptiter. the easiest 
decision you will have to moke is 
whether or nol to buy il in kit 
lorm^ Kits, a^ an ideo. are a 
great advantage to hobbyists as 
ihey offer o greater range in 
*hat IS usually <i small budget. 

The reasons lor choosing one 
computer over the others are 
decil! with in another section. 
Here. I will be dealing with the 
problems of kit buildmg includ- 
ing special tips on certain 
machines as they crop up. Some 
kits ht^ve pitfalls for the unwary, 
and I will hopefully covet (hem 
before anyone gets caught! 
There will also be notes on fault- 
finding and repair for those who 
have already been caught. 

Undoubtedly you will benefit 
from building your own kit Not 
only will you be better prepared 
for larger projects, but at so you 
will Learn a good deal about the 
system and how il works ^ 

You must, however, be pre- 
pared to spend a lot ol time in 
constructing the kit and perhaps 
even longer in getting i( to work^ 
Someone who has done little or 
no construction work before can 
escp^cf to spend 4-5 hours on 
even the simplest of kits. 

Remember that the compo- 
nents, n&t the kits, are guaran- 
teed by the makers, so you will 
have to pay them to put it right if 
it is your !ault. However^ if you 
stick to the instructions, take 
care over soldering and select 
the correct components, you 
should have no trouble. 

Once you have decided on a 
kit, the next step It lo get the 
necessary tools if you do not 
already hove them. They really 
fall into tw^o categories — essen- 
tials and extras. 

The essentials are soldering 
if on. solder and cutters. The 
eactras. which you will need il 
you are to get a professional and 
reliable fimsh. ore pliers, a form 
ol desolderer, either a small sol* 
der sucker or solder wick and a 
ste<:idy pair of hands. 

The soldering iron should be 



mains-operated, unless you can 
afford a temperature controlled 
one. with a small bit lor light 
work. It should be rated at 
around 20 watts, and definitely 
no more than 30 watts, as this 
will tend to destroy components 
through overheating. 

The solder should be of a fine 
multicore flux type oE 22 gauge 
prelerably. Thi^ type does away 
with pots of flux* 

The cutters are needed to trim 
the ends of the soldered-m com- 
ponents. They should be* side 
cutting and quite light to get a 
smooth finish on the underside 
of the board. 

The pliers will be needed to 
bend components to lit into the 
board- This can be done with 
small fingers^ but is often unre- 
liable and causes stress ini the 
components. 

The desolderer is useful when 
too much solder has been put on 
a joint, Hie solder sucker does 
what its name suggests, and the 
wick is a woven copper strip 
which, when healed and pressed 
on to the joinl by the iron, draws 
the solder oil. Very useful for 
beginners. 

If you are going to be any good 
at const rucl ion- you will need a 
steody pair of hands. Funnily 
enoughs women and children 
make the best solderersi Do not 
give up, though, if you are in 
neilher category! t 





fOUSwmjNSTROCTIO^ 



With ail the good kits you will 
find comprehensive instructions 
for assembly If you don t. ask. 
Most of them tell you to recid 
Ihem first- Do sof Even il you are 
an expert at construction, the 
ordei m which you pssemble the 
components may be important. 

Sk> long as you read and follow 
the instructions, you should 
have no trouble with identlflca- 
t ton and assembly, li you ore not 
used to soldering, this will be 
the point at which you will ftill 
down. 

Most kits advise you lo build 
up the components on the board 
in layers, so that when oil of one 
lot — say* resistors — are in, you 
can lum it over and place it flat 
on your working lop. This allows 
you two Iree hands to solder with 
and ensures that all components 
are Hat on the board. 

Transistors, however^ should 
be raised as much as a qyqjter^ 
of-on-inch off the board and 
soldered with core os they are 
easily destroyed through over- 
healing. This olso goes tor the 
Qthei components, although 
these are not so critical. 

Th#re is no hard and lost rule 
alx>ut soldering. If in trouble, 
seek advice. Do not continue it 
you I eel unsure, it will cost you 
dearly in time and money if you 
make too many mi stokes. 

Hove lun while you are build- 
ing your kit, as it may not last. 
Once you have finished it« 
everyone else will wont to hove 
ago. 



BYKEITHMOTT 



^MPUTtlR » VIDEO GAMES t* 




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Compuiing This magazine is essential reading for 
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Educownai Computing shows you how to get 
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n COMPUTER & VIDEO GAMES 



Two bottlas of champagne are 
up for grabs on this pag^ ^very 
month. The firfit corr&ct answers 
out of th^ hot for both the Mind 
Routines problem and the 
crossword on 15 November will 
have bottles of champagne 
rushed to the^m. Jon Pedder's 
Mind Routines probtem will test 
both your ability to think through 
a pu^le and set ii out os o prog- 
ram- These lend themselves to 
solving by program. If you ore 
more literary minded try Nev- 
era's Ciosswoid and see how 
you get on. 

• For details ot Computer & 
Video GumB9 competition rules 
see page 2D. 




ACROSS 
L D fervescent ordering (3.8,4) 
6. COBOL abbreviation For 

game man (3) 
8. Inc re menial pests (5) 

11. 12 when associated with a 
star on the Horizon (5) 

12. DEC ma in frame soHwore 
Greek to the Pet (5) 

13. Atari Computer recording 
equipment mitmlly measure 
14) 

IS. Enjoy<rbie 3 (3) 
17* The lops in binary (3) 
13. What to do in a Grand Prix 
game to reset itself {5) 

20. Count illicit contents ot a 
piocedural controller (5) 

21. 3 Tree bit {3) 

22. Sounds like tun on the IBM 
mainlrame (4) 

23- Stop the liO Iransler unit (S) 

24. Single example of 17 (4) 

25. Alternative condition tor 
one (2.23 

26. A rap ends vices which 
revolutionised the video 
games scene (5,8) 

DOWN 
L Conditional companions 
(4.4) 

2. Single bit restructured to 
lure (4) 

3. Primary purpose RND (5, 8} 





The tour planetji neaiest the sun 
have perfect circular or bits 
around the aun a$ ii centie point. 
Theu orbit penods mm given in 
the table i^piow 

N(j cJ day$ 
Planet tot one or bit 

MeiLury 87.97 

Venus 224,64 

Eanh 36S25 

Maiii BS6.79 

They am cyrremiy all in a 
atiaight line with the Jfrun 
(U When ib the next tune that 

thiee af them wili be jn line 

wiih the Bun aga^n? 
(2) Which Ihtee planet s^ are 

they? 




Cu, Fe* Co array m embers 
(8) 

5. Text editor widely used 
amongst student ecologists 
(4) 

6. Hub of the computerised 
pea packers [6} 

7. Small but highly esteemed 
character (2) 

9, Mealy sounding conalant (2) 



10. Screen t^«luie Fiom the 

I>eud Sea? (81 
14^ Make the program go ta^l 

(31 
15. The liisl record on a drsk? 

(5.3) 
le. Hex SO. Binary 10 10000. INT 

(4-20-U For the present time 

(BJ 
23 Word pieces (4) 



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TEAM 4 
SOFTWARE 

Dept, TM 

12 Tail nt on House, 
Reileir Roid^ 
Harold HilL 
Romford, EsseK. 






ClKla No. Ul 



B4 COMPUTER & VIDEO GAMES 




THE interest and compulsion ol 
moat computer and video gomes 
lies in the appeal of iheir graph- 
ic. There are basically three 
ways to present the state or 
results of a gomes program: with 
numbers, with words or graphi- 
cally. 

While numerical computation 
is undoubtedly necessary during 
the course of any reasonably 
complex game, to present the 
results numerjcally is bound to 
become rother dull sooner or 
later. To present them in words 
is better, but books are better tor 
reading from than video screens. 
A picture is worth a thousand 
words, and graphics are much 
more inforinotive and natural 
than the other alternatives. 

Most mierocomputers, includ- 
ing the Commodore Pet. Sharp 
MZ-80K. Tandy TRS 80 and Sinc^ 
loir ZXaO and ZX81 have a set of 
graphics keys on their 
keyboords. Wilh these keys a 
pictorial display can be typed 
Qui in the some way as a para- 
graph of text. To make it easy to 
produce a graphic display from a 
program, these microcomputers 
also have what is called a 
memory- mapped screen. 

The idea of a memory-mopped 
screen is thot each character 
position on the screen (thcit lip 
each position in which a letterp 
number or graphic character can 
be placed) is mapped to a toco- 
tion in a speciolly reserved pari 
ol the memory. By placing a 
number in a location in this area 
of memory, the appropriote 
chorocter automatically appears 
in the corresponding screen pos- 
ition. So producing a graphic 
display is reduced to o memory 
management exercise. 

Some ma€hines^ including the 
Apple and Acorn Atom, provide 
explicit drowing commands. The 
fundamenlol ones ore "MOVE" 
and "DRAW". The former permits 
a drawing position to be estob^ 
lished, while the latter causes a 
line to be drown from the current 



drawing position to a specified 
position. In terms of drawing on 
paper with a pen, these com- 
monds are equivalent to moving 
the pen above the paper, leaving 
no trace, to poaiijon it. And 
moving it while in contact with 
the paper so that it draws o line 
as it moves. 

The MOVE and DRAW com^ 
mands allow the programmer to 
work in terms ol screen posi- 
tions> which is morenoturol thon 
manipulating memory locations. 

CO LUMN 
12 C 39 40 

1^ 



24 

v2S 



I 












1 


^ + + ^ 1 












! 1 




1 





41 



1921 922 



42 



|9 61|96Z 



39 40 
79 80 



^ 



96d 



999100Q 

J 



The way m which screen posi- 
tions ore mapped to memory 
locations for the Pet is illus- 
trated in Figure L The Pet 
screen has 25 rows, each with 40 
column positions, so thot a 
chorocter may be placed in any 
ol LOOO positions on the screen. 
These screen positions ore mop- 
ped on to the memory locations 
starting from the one with 
address 32768. As shown in the 
figure, they are mapped by lows. 
To ploce a chorocter on the 
screen in a position whose row 
and column are given, we need 
to work out the address pi the 
corresponding memory location. 
A little thought should confirm 
that if the position at the lop left 
of the screen (in row 1 and col- 
umn 1) corresponds to location 
32768. then the address of the 
location corresponding to the 
screen position in column C at 



the top row IS 32768 * C ^ 1 while, 
generally^ the address of the 
location corresponding lo the 
screen position in row R and col^ 
umn C is 

32768 * 40*(R - IJ ^ C - I 

The Basic instruction which 
enables displays lo be produced 
using memory -mapping is the 
"poke" instruction. On a Pet, the 
instruction 

POKE 32768. 42 
causes the number 42 to be 
stored in location 32768, so that 
outomotlcallv the character 
whose code is 42 (an asterisk) 
appears at the top let I corner of 
the screen. 

In this way the tools required 
to produce a display on a 
memory- mopped screen ore the 
memory-mapping formula given 
above and a table of the codes 
for the available graphic symbols. 

The screen size ond the orea of 
memory mapped to the scieen 
vary for different machines but 
with a knowledge of the opprop« 
riate values for a particular 
machine* the formula given fof 
the Pet can be amended. 

A space invader can be plotted 
near the centre of the Pefs 
screen using the following 
instructions: P _ 33268 

POKE PI. 25S; POKE P- 247: 

POKEp- 1. 127 

POKE P * 39. 2S5: 

POKE P > 40. 249: 

POKEP^4L 127 




Figure 2 is a line drawing o( on 
invader. Whatever you think of 
the likeness, it demonstrates 
thai o drawing of one cern be 
made by joining a set of points 
by straight lines. By varying the 
positions ol the points, or adding 
more points, it is possible to 
obtain a more convincing^ oi 
even a more aesthetically pleas- 
ing, version. 




Yoy do not ittwf m bt able M 
program Co moke good u$e of a 
home compuiof but U you tan fatd 
JMtnictiotis to your machine it wiM 
bf thai: much more rewarding 

In thts seri» i^e nte going lo 
tiach you how to program in Basic, 
the simplest and most widely used 
computer lafiguage available. 

Thtfe is a myth built up around 
e«Mfialen thai only a mathemaii- 
ctt geniut can understand Itieni. 
But even 10-12 year olds wtib no 
particular skill with figures art 
among the ktmest home prog- 
ram man that a dayi. 

Anyone can learn Basic, you do 
nol nead nny previoui computing 
axpirjanc^t or even have yoitr own 
com|3utvr — although that would 
obviously make it more interesting. 

If you alraady have a microcom- 
puter and have lenrnt how to use 
its version of Basic you have a 
head ttart on the baginnen but do 
not turn the page |usl yet E^ch 
microcomputer has its own Bas^ic 
fiiiiti and ditlerent lunctioni 
which make il incdmpatibia with 
Others ol its kind. 

This series will heJp you under- 
tiand some ol th^ functions printed 
in a different machine's pfogrui 
listing in short it will help yov fat 
the most out of this magazine. 

At the end of this siri^. you will 
not only be able to write your owa 
computer programs, but also 
undef^tand othof people's prog- 
rams^ We will encourege you to 
convert tfiese other programs to 
run on your maehma 

How 10 write games programs 
will be introduced early on but 
remember that you can write prog- 
iwM for anything: from keeping a 
check on your bank balance to 
itoring names mnd addrassas tor 
your Christmas card list 



^^, B ft cjjmnw 

To get a cromput^r to do g-om^- 
thing lor us, we myst give it o list 
of instructions. This list of 
in St met ions is called a cornputer 
program'. In order that the com- 
puler may unde^rsland our 
instructions, we must wf ate them 
In a language that the computer 
will understand. 

Unfortunately* English as too 
complex o language for it to 
undei stand, therefore we use a 
spectoJly devised com puler lan- 
guage. The computer language 
we will use is colled Basic - - this 
stands tor Beginner's All- 
purpose Symbolic Instruclion 
Code. 

There are slight vadations in 
the versions o! Basic available 
on different computers. I will 
describe the standard version 
andn when necessary^ point out 
the differences lor a number ol 
computers. 

GEnSEsTftSto 

First you will have (o switch on 
your computer. Some computers 
will oufomatically be ready lor 
you to converse with them in 
Basic, but with others you may 
hove to go through some pre- 
liminaries such as looding 
something (rom o cassette tape 
that will allow the computer to 
understand Basic. 

Often computers will give the 
response "READY" so thai you 
know that you are in Basic. Once 



you have reached lhi$ stage you 
will be able to type In a Basic 
program. 



PROGRAM 



We will start with a very simple 
program which consists of only 
two instructions — one per line. 
10 PRINT 2 + 3 
20 END 

^ch line ol a Basic progrom 
begins with a line number — the 
"10" and "20" above. These line 
numbers dot ei mine the order in 
which the instructions will be 
obeyed. The computer starts 
with fhe instruction with the 
smallest line number and 
finishes with the instruction with 
the largest line number. 

You may type in your instruc- 
tions in any order: the computer 
will aufomatically sort them 
accordmg to the line numbers. It 
is not necessary that the line 
numbers go In steps of 10 as I 
have done above. However, it is 
fairly common programming 
practase as it allows lor later 
instructions to be inserted. 

Try typing the above program 
into your computer. Remember 
to press the key marked ''Return'' 
(or "Newline") at (he end of each 
lane typed into the computer. 

If you make o mistake when 
typing a line, your keyboard will 
have a key marked 'Delete" or 
"Rubout" which can be used lo 
erase Ihe last character: typing 
the key repeatedly w]|l cause M 
to work bock along the line eras- 
ing one character each time the 
key is pressed. 



68 COMPUTEB * VIDEO GAMES 



On th© Sinclair computers, yoti 
do tiot hav© lo type in th© letters 
individudlly as there ar© keys 
which, when pressed m the 
appropriate point, will type Ihe 
whole of the special "keywords" 
such as 'TRIWT\ 

With some ol the microcompu- 
tei systems, the "END" instrtic- 
tjon should be omitted. These 
include ihe Sine loir and the 
Aiori. 

Once you have typed in your 
Basic progrcim. you can then tell 
the computer to obey the li^t of 
instructions — you do this by 
typing the command 'RUN'' and 
then "Return" again. 

The above program tella it to 
calculate 2-3 and then print the 
answer. You should therefore 
iind that the number 'S" is 
printed. 

The computer will then print 
the response "READT' to lei you 
know that it is ready for you to 
give it another command. If you 
agoin type the eommtind 'RUN", 
then it will again perform the list 
of instructions. You could type 
the^ command "UST' in which 
case it will list your program — 
this is useful in ch«:king what 
your program looks like at any 
stage. Alternatively, you could 
now "edit" your program. 

PROGRAM 

Often you will want to change 
your program in some woy — 
then you say that you ate ''edit- 
ing" your program. 

It may be that your program 
does not do what you wanted, in 
which cose there is an error in 
the program — this is often rel er- 
red to OS a ''bug". You will hear 
people soy that they are "debug- 
ging" their program, mecining 
that they are trying to get rid ol 
their program errors. On the 
other hand, your program may 
be correct but you want to amend 
it in some woYk In either case, 
you will hove to edit your prog- 
ram. 

Editing Basic programs is very 
simple. There axe three types of 
change you might want to make. 
You might want to change a line, 
add a new line or delete one of 
the current lines. 

To change a line, you simply 
type in the new version ol the 




line. Thus, il 1 wanted to change 
the previous program so that it 
multiplied 2 by 3 instead of 
adding, 1 would type 
m PRINT 2»3 

The old version of line 10 
would be replaced with the new 
version of line 10. 

To insert a new line, you type 
the new line and the line number 
wilt determine where it is 
inserted in the program. If I now 
typed 
15 PRINT 2+3 

I would have a program which 
printed the product of 2 and 3 



By using these operations we 
can perform a whole range ol 
arithmetic calculations. E.g. 
4.2 3* '2/6 
3t2*S 

In the first of Ihe above exam- 
ples- there is a "real" number — 
one that contains d decimal 
point. In some versions of Basic 
only integer numbers are 
allowed — those that do nol ccin- 
tain a decimal point. There will 
always be a limit on the size of 
numbers that your computer c<xn 
cope with* 

In the second escample, the 
computer is faced with a choice 
— ^'will It do the addition or mul- 
tiplication first?". II it dc^s the 
addition first, then it will get 
"3 + 2" which is 5. and then mul- 
tiply that by "S^' to get a final 
answer of 25. However, if it does 
the multiplication first, it will get 
"2»5" which is 10- and then add 
"3" to get an answer ol 13. 
Clearly* a specified order must 




followed by the sum of 2 and 3. 

To deiete a line of your prog^ 
ram. type the line number then 
press the "Return" key. 

Some computer systems pro- 
vide you with a cursor that can 
be moved about the display 
screen so that you can actually 
indicate individual characters 
that you want to change. This 
would save you re* typing the 
entire line. 

Note that era "*'' is used in the 
above example to indicale muJ- 
tipljcation. The remaining 
arithmetic operations are: sub- 
traction represented by "^*\ 
division represented by *Y* and 
exponentiation represented 
either by "**" or by " '*. Exponen- 
tiation mecms coJculating pow^ 
ers of numbers e*g. 3**2 is equi- 
valent to 3^, 



be laid down for such a situation 
so thai computers will always 
arrive at the same answer. 



Ntm Ksut 



If you are familiar with a cal- 
culator, you will realise that 
anything we have done so far 
could be achieved by a simple 
calculator. Next month. I will 
cover some of the features of 
Ba^ic that make use of the foot 
that a computer is more powerful 
than a simple calculator. These 
will include the use of 'Vari- 
ables'^' to make your programs 
more general, and "loops" so 
that you can repeat cot dilations 
lor different values without hav- 
ing to re-RUN your program. 

NEXT ISaS 



COMPUTEP * VIDEO GAMES B7 



jm^ mmhmmmi.m\mmmmmfVHm 





An idvemure wtffi re&f g§y for 
ih« fjrit KOlv«r Mane he st tr 
basfid Mr Micros Gold Riis^i 
l)am« hitf tnqutfi«s from lt#tn 
idv^ntyrflrs (or^g befote CommO' 
dgre^ VIC 20 Computer ivas 
ivtiWili. 

This ofigmB) program costs £16 
and stiould be available from ^ny 
vrC d&i^er I have m doubt that 
sooR hundridt of VIC ownt^s 
will N byrnmg midil'ight phos- 
phor as th«v tika on the chiF 
lenga of Gold Riish 

Even ttie packagrfig it a ^ei- 

comt departura from tfto usua 

/assette software Gold Rufh is 




supplied in s good looking booh 
type forinat. ton taming the cas 
seito. th<? mstructigns, the 
claims r^gistratmn guide and an 
a^say appkicatton iorm The tards 
are used for registering your 
s:laini to dig lor gold in the prog- 
ram and E^onfirm your right to the 
real gold 

It IS th« (act that this program 
oHers a tiag o1 reel gold whtch 
makes she game unique Some ot 
Voy may be aware that in the 
usuii advtnture tvpe game any 
ggid thai you win. iristafitly dis- 
Appears when you switch otf tho 
computer With ihis game when 
you get the gotd you keep il^ — 
yog I list hawe to be first! 

The on^ problem thai I can 
report so tar is that finding the 
liiddenword that earns tha gold, 
IS going to take a lot ol hard 
work 

Yoij sea. the \MB gold rush- 
consists of not \utX Qm pmft, 
but what the notes desrribfl as a 
number of challenges^ The first 
part is eisy. since it is a very 
neat display teaching a little 
about ttii real gold rtish and 
gcving instructions On how to 
0|Hrate what is described as the 
*!* Micro Time Tefminar" This is 
basically a program which liMids 
another program A vary etiec 
live way of overcoming the 
memory limitations of the stan- 
dard VIC 

The hard part comes nenl 
because the screen then displays 
a map showing various numbers 
The map is of California, and the 
numbers ere sites that may bfl 
visited Each site can or>ly be 
visited when you know the key. 




and you gatto know tt^e key by 
solving ptiifles or by reaching a 
high score in a game 

This means that at the start 
you can only go direct Iy to one o1 
three locations Once you have 
fulfilled the requiremenits thevi 
you can enter m the keys to ptay 
the ntMt levels, and %^ on uniti at 
last you wvll reach your own gotd 
mine. 

Each time you run the pfi»gram 
the fceys remam the same so if 
you tike you can re-play the 
games (hat you enjoyed For 
estaiTiple I managed to gain 
aicce^ to Ihe Digs^^s" only tftec 
I hid realised the relevtnce of 
the Indian Smoke Signals, now I 
can select that game strtiight 
away 

The authors assure me that 
the games get better as the 
player gets better, hut we 
shouldn't give too much away 



here For those ol you consider- 
mg a computer and fancying your 
powers of 1:0 ordmaiion and 
mental agiiity tfte program could 
even make it worthwhile buying 
a VIC. since Mr Micro have 
guaranteed that the minimum 
value of the gijld will be flSO 
Furtttermore fpr every program 
supplied the company will add 
more gold 

Only one winner but this prog- 
ram must be re garde d as good 
value, even if you do not manage 
to find the Golden Word Many 
original and mnovaiivB elements 
have been incorporated, which I 
am certain will soon be copied by 
other software writers Although 
no mdniidaal game tNat I have yet 
reached would lustity high praise 
in ns own right By the w&y. Mr 
Mkro estimates no one witl 
sohm tt tor it least ^x weeks 
After that 



ea COMPUTER & VIPCD GAMES 



TlniKJiFiMLlSOnWARES! 




Just wh»t aviry gstronauC 
drfiid^ ifi outbreak nf the 
procreative Groen Ihmqs on his 

On A misston in Ihe space 
fiplDriEiofi ship Znyyr. t1i0 
£ornp<jter mforins ydti thM 1h« 
Grsen Things Art aboard. 

This IS ihe mam gtine on 
Acomsoft'i (iamfis Pack No. 7 
(£lOl;t^hichal!»?inclyE!esBall^flic5 
ind Snake 

Yqu %iBrt off unarmed and as 
you mov^ found the ship you 
mutt hnd the Grg'^n Thmgs and 
dtstroy I hem with the i^eapons 
yoy hnd ~ ^a n ly two ot wli^ti can be 
earned aT once 



TTTT 



SHPKNVMJE 



Sifitliir's $11 pack of games for 
the ZK81 owner with a 16K pacic 
IS goiid vejue for mon^y ai oniy 
C3 9S 

The pack, availabfe from Sin- 
clair Ftesfiarch is called, unirti 
a g natively. Gemef Pack 4 and 
siaiti tkH with Cursor Handhr^g 
which follows some of the eeiiy 
cursor Type programs Ttie 
scmn IS full ol numbers, wtth 
little aittmpt ai graphics to 
alltviite the numerical mfiirma 
tton The piece of paper tucked 
intc ttie cassetii c«se gives 
rudtmentary i nil r yd ions, but 
these are also presented a! the 
beginning of es^h program on 
the screen {this Applies to all 
Sinclair games) 

The program IS fatrty long, tak- 
ing about 3 mmuies to load Vou 
are e piloi. you can control ihfl 
throttle of yoiir craft — keys 1 to 
9. and altitutfe — P tor clockwise. 
D for anticlockwisi Height h<sn 
fonts I aiid vertical ve^ocuy, lu^l 
supply. thfOttlB getting, ahitude 
and time are displayed The 
screeii flashes every two sec- 
onds as the instrymeiiiaiion^ is 
updated A simple graphic display 
shows height and honiontal 
position 

Twefnty Ofie it a simple 
pom oon -type game, but played 
Wfth dice msiead of cards It is an 
interesting twi}-play«r game, and 



Some Df them don't do quite 
what you would expect — but I'll 
leave yeu to hnd oiit exactly 
what they do 

There ^re three types of Green 
ThifH}S — big Green Things, tittle 
Green Things and eggs The 
hardest to kill bemg tha big Ofies 

Thi$ game is extremely dif 
ticult fwell 1 haven t won yet) 
Since the 6re«n Thirigs seem to 
multiply too fapidly —in Itct; just 
about whenever you slop m dp 
something This means it is not 



worth pulttng ihe plan of the 
ship on the screen smce the 
Green Things may decide to mul 
tip4y then 

In this pmo. the Green Thmfls 
wiM move artiuntf, so thiit if you 
find nothing in one rf>orn. Qreen 
Things may arrive there later 
After a whrie I found this game 
became a bit tedious because a 
number dl actions to prove ehec 
tive had to be repeated. It 
requires 2K to run m on !he 
Acorn Atom 




the randamness of the throws 
can create great eKCitement 

Combat is a rather il range 
Qame h purports to be a simple 
space invaders type game, 
where your craft has to avoid 
beuig blown up by the alien 
Unfortunately, the conirDi keys 
^ using A, Sr Z and X -^ are not 
as obvious Of easy to use as the 
cursor keys would be A simple 
modil rest ion to the program 
cobild fix this — rather bonng 
really 

Substrike is very simiiar — 
however this time the attacter fs 
on sere en f Nobody who has so 
far played this game, has wan! 

Code Breaker is a Mastermind 
game where you have 10 gues 
ses to get the correct four 
number sequence. 

Finally thfs cassette has May 



day. which is a space rescue 
game A bofty is adrift m a 
7.-:7 k7 matrix. ¥ou are given 10 
attempts at iryii^g to itiscovir 
the position in this matny of th^ 
body There is aiso a time Hmit 
Once you have cracked' ihe 
method of hn^mg the body from 
the clues given, it becomes quite 
eaiy. 

While the games taken indi- 
vidually are not world beaiers. 
this cassette ts stilt good v^lue 
and no toadtng problems A 
numbe/ of different tape recor 
ders were used and ivone gave 
any problems 



Nqw for BalEisitcs Thrs ganne 
lakes aboui three minutes to 
load and requires 2K of program 
ani GK of scceeit mettiotv to run 
JO It also requires the floating 
point ROM 

The game, as you may have 
guessed^ utihses hiqh resolution 
graphics to prmt a picture of a hih 
With ikttle boxes on each side 
representing the guns 

PJayers fake it m tmm to fife 
at each other end ihe player who 
PS hrsi to score s direct hit gams 
a point The hn has io be accu 
rate since wh«n f played. I 
appeared to have got my shell to 
hit the other gun. but ^i was 
regittered as t miss When you 
do get a direct hit. the oppo- 
nent s |an explodes and a huge 
Ctinsimas tret shape appears m 
its piece while an unrealistic 
ex plosion sound comes horn the 
speaker When numbeis aft fad 
in. they acttiaily appear at the 
bottom of the high resolution 
screen, however, because the 
characters are plotted ufing 
Basic, they are stow to appear 
and when into ring hgures, digfils 
are often missed out 

Finally, the Sitake program. 
Snake takes about two mmutea 
10 load and requires 2K of prog^ 
ram and 1/2K of scfeen memory 
to run in 

In this game, you have lo go 
round the screen eatmg up num- 
bers between one and nine 
which start decreasing after a 
while. When you eat a number a 
sound IS produced and the snglii 
increases h^ the vabe ol the 
numtaar. U you eat the wait or 
youf tail tM game stops untti you 
hft a key. then the neit &nt 
starts 

This program, although ttie 
shortest end simplest, I found 
was the most addictive - always 
wanting to beat The pfevtout 
high score. The game starts oN 
easy, but as your snake grows it 
becomes more dithcult since 
there is more to avoid I found the 
keys ditftciiit to use. 

If you are one of those who 
iikes a strategy game, then this 
IS worth buymg, otherwise stick 
to space mvadtfrs 



COMPUTER & VIDEO GAMES 89 




somwRESQiMunr^ 



vn^/0imm 




Many yMn iQO tt^« fireat Wi/at d 
Zot (ofg#d his orb nf power and 
kept It guArittd dai^p m the 
fyrthtst rectisis Ol hi» caiile 

In Wiiard's Cattle, an adven 
ture lor the games plaver who 
kikes action rathei than ob&cure 
ctue gachtnng and vDcabuiiry 
tesfing your lask i& to nco^r 
th^ Oib Df lux 

But hrsi yoy have to decido 
^ust who - and what - ^u are 
You could be an ill, a dwarf, a 
hobbit or «veii a plain oid human 
For the purpDs«£ ot this rev^w 
lei's say a hobbit Having made 
Vour d^cisic^n the neitt question 
ii "Sexr 

Wizard's CasUe s programmer 
immedialQly won me aver here 
F^r whan t replied, i>ona loo 
wittilv. 'Ves Pleaser\ tha com- 
putet raspondfid wtch "Cute 
hobbHp very cutei Now try n^ale 
or If male " Only chastised I 
typed in mala 

the coEftiputer ganeietas three 
attributes for yoiir hobbit These 
are strength, intelligence and 
dflMterrty. These may range froru 
MB. I ha higher the better m6 ^1 
any fall balow 1 you lose 



A TOUGH TEST OF 
HOBBIT IWGEHUnV 

These qualities are added to 
end subtracted from through buy 
mg expensive potions ot 
Strangth ofl dungeon veFidorf, 
being wounded m fights with tht 
ntonsters, eastmg spells, or often 
|yst plain fuck 
'Qrmk hoin pool' 
"You teet stronger" or: 
'Gaze into Orb" 
'You fiil dumber' 

You an also giwn $0 gold 
piacas at I he start of the game 
and with these py lor your 
armour and weapon. If you 
chomi the best weapon and 
pMi amour you Mil f>ot have 
enough ) an to buy a lamp (ifiOK- 
hausiiblal or ftarea (usable once 
each I 

Once hiUad out. 6owr^ mw the 
depths you go The castle 
dungeons consist Of eight levels 
- each with 64 |B^8) rooms 
Tbese are either empty, 1illad 
with monsters, tfaasura. cast I a 
sa4«smtn with the latest m 
adventunnf gear, or stranp 
art »f acts like magic pools, crystat 
orbs, books or chests 

These are a bit of a gamble as 
you can bene fit trpm them or hnd 
nasty things fiappen when you 
tamper with them I once went 
through a 2&7 turn Adventure 
With a book stuck to my sword 
hand lor about SO of them 

A map of the level you are 
standing on is shown to yoii and 




each room you tuw yAplored 
includes a symbol of what you 
found there, Unexplored rooms 
are marked with an asterisk 

Monsters may be lotighi toi 
their treasyre or you can tun 
away, or if youi mieEligancf^ rs 
over 15 — you can cast a spwll on 
thtfm. Stmrs lead yon to new 
levels, wirps cin si^nd you any 
where m the dungeon, pits send 
yoy crashing to the i^it le^l 

There are stradgi curses 
which inhibit your flowers and 
marvfllloys treasures whith will 
make you whole again 

Wizard's Castie is a well 
rhoitght out unpietentious game 
of fun h generates a random 
dungeon every tuna and tactics 
tor Survival mu»i be learnt 
quickly or you II b« an eji hobbili 

Winning is achieved when you 
emerge from the casUe eni ranee 
with the Drb Ol Zdi grtsped 
firmty tn your hairy hobbil palms. 
Wizard's Castle Kwith Laser 
Defence and 6olt| costs £S00 
and IS available on the Sliarp 
MZ 80K from Knighls TV & Com 
puters of Aberdeen May the 
force be with you hobbils 



"T-V ^^ 







90 COMPUTER & VrDEO GAMES 




SOnWARE^ 



♦ 



RAIDERS FROM 

THE 

HEAVENS 

TN Arcade gan^e Gala^itns hn 
mm found its wav on !d mmy 
mmtmmt but fh^ liS Appla ver 
tpon ciftid Alf9n Rain takes a lot 
fit baffling 

Boiii IN waves of bailike 
Mjirtiaii$ and the ipaet sNp 
under your ciontrol rnO¥i across 
the screen v^iy quiE:klY with the 
tik>ck of then creatures reform 
iiTQ and swooping into a frtiti 
tormtfmn ready to attack with 
flliafming spe^d 

Uijng the nqht and leh dirtc 



tional Cursor control key to movi* 
the defending sti^p^vpu havt to 
nrflilV cha-ngi dir^ctit 
the ipray of mtsitit* fiftd by ttie^ 
ifiiiradinf forct 

Of the (our deep bloci m (ht 
ifeadly enemy Hee! there are 
three different types to blasi 
With your Laser gun Each ryp* of 
creature IS worth a fujmhef ot 
pomts rangmg from 30 through to 
W and samAiifrhes going up to 
300 

At the start of the game y^u 
gel three Ifves. or ships, to play 



wnh When those thrti art 
blown up the gami< rs over Often 
St dMifi'l lake long for all three 
to be ejfferminated which is frys 
ifBlmg buT. of course, addiclive 

To fire at the galactic warnors 
use the A key The be si tactics to 
adopt are to belt out a continual 
onslaught of shots while 31 I he 
same tune rnoving the defence 
sf^ip to pfcl off the galaxiafts 
working your way from^ne s^de 
of the ^kock to the ot 

You must keep moAg all Ihe 
time otherwise tbm ksmika/e 
type ahens willj^rb you in no 
time 

At fifstjfliVi'ns e^sy while 
tlirjiifl^rsh^ps are vent mdi 
?qin with and later in 
l»rs tf^ping down leavir^g m 
its wavH shower gf missiles 

Whop he $e start flying Bcrciss 
the scrPn rhii puce hots up and 
you have to frre at the alien while 
trying to dodge both hi£ shots 
and tha space ship 

The biggest scoren are the 
topmost gafcaKtan (red if you have, 
colour! One of those shut down 
durmg a swooping drve rake^ m 
100 points. When it doubles up 



IJ 



with one or two of Ihe smelter 
shfps so that they attack m for 
ma lion it ii worth WO points. 
ODn't let them fly too row before 
you hre at th^m because be^ow a 
certain level your gyns art di- 
acirvated O^n t let these fool 
you into a false sense of security 
with the^r sptciil computerised 
tracking device feature which 
makes them home in on your 
ship Vet they wait for a law 
seconds before they attack 

The magic number of 3,000 is 
reckoned 10 be a high score and 
when you reach that you §*! a 
bonys ship to add to your fleet. 
But so fatt rmvrrig is the game 
that It rs hard to achieve that 
figure without a lot of practice to 
perfect your firing and movement 
CO -ordination The graphics and 
sound effects f^ave that atr #f US 
professionalism 

In America /^^ Ram fiat 
recec 





10 
tainable 
fe and Pam Computers of 
lale, Lancashire anif 
costs tT3dS and runs on 48K 



Destroying poisorwus sea snakes 
from an all too vulnerable sub- 
marme. white ivaiding the deadly 
killer whales, requires an aware- 
nets aiMl deiftertry most people 
have never had to devetop 

dut then most people have 
never tried to master the recent 
addition to the Tandy TRS-SO 
range of games It is celled, sim 
ply. Serpents and the aim i$ to 
Stay ilive ars long as possible ftnd 
deftrt^y as many of the snakes 
thai Wftthe out from tN rocky 
bottom of ttifl sea bed as you 
can You have lorpcdo tubes 
both fore and aft (or this pur- 
pOie. but «ven these are povver 
h» against the mamitding killer 
wtiales. 

Throughout tfie game th*^%*' 
swtm across the sea scape Ih^ 
serpents keep welt out of their 
way and unless you do too, then 
the game is all over. 

The submarine is controlliit by 
the cursor keys (or movement i^i • 
and down or right and left Fi' 
diagonal moves, press ttie hori 
lontal and vertical keys together 
Firing left the 2' key has to be 
depressed and for firing right the 
^'^' key must be down Alt that is 
difficult to master when vou are 
using thnie hngers ot your left 
hand and three on your right 
hand. So be prepared to really 
tQficentrate. 

' Serpents has five levels of 
ikilt Trainee Torpman. Budding 
B4istfir. Capable Captain. Despa- 
rate Destroyer. Expen EJrter- 



POISONOUS PERU. BENEATH THE SEA 



minator A s^xtli alterr^tivt is 
catted Special Missions which is 
the most everting to play In ttie 
firM five levels the speeds of 
snakes, submarine and tor- 
pedoes mcrease with each. 

Ii% the Special hriissions sec- 
tion the ptayer can select various 
levels The game speed can i>e 
set between one and five, the 
subnmnne tdrpedo and serpent 
speeds between one and three 
and the torpedo salvo (the 
number fired^ between one and 
rtv«. 



For en average player set the 
speeds of ail elements on the 
middle number To get a hi^ 
score of dead ¥nake$ set the 
torpedo salvo on the fastest set 
ting and the snakes on ar^ aver 
age setting That way you tm 
just about keep control of your 
fingers, working sisc for different 
operations 1^ no mtan feat, with^ 
out panicking wti^n you suddenly 
firtd yourself dodging rapidly mul 
tiptying tmkes and kilter wtiales 



To destroy the snakes the 10 r- 
pedo must hit them |ust on the 
head making them sink to the sea 
bottom If they are not killed 
instantty the snakes spitt up and 
re gene rate at an alarmmg s|>eed 
fiilmg up large seciion^s of the 
screen 

The game could be vtsisally 
more exciting as th^i graphics are 
quite crude But the game it 
good to play and the high degree 
of difficulty m operating the con- 
trols only serves to spur you on 
to master them 

Available from Molimerx. the 
ItK tape costs £6 75 and the 3SJC 
disc costs £tt 7S 




Video Genie... 




Are you a home enthusias! taking 
your first teniative steps into the 
enihraUirLg world of inicro- 
computers? If bo. the Video Genie is 
the ideal complete sysrtem for you! 

II s A real micro* computer, tiot a 
pocket one, yet it only needs 
connecting to a domestic T,V. sel to 
prodiice supeifa results. 

The Cepiie is compatible with the 
populaf TRS 80 16K level 2. the best 

"ling computer of all time. As well 
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A betfuisp's Buide to plain jargon 



ALQORIIHM A process ar sot of rul^i ta 
eirry out i task or solvo a m^th^matieal 

ABRAV A series Qf items {data or intorma 
tionl af ranged to form a m&aninflhrl pat^ 
Itm 

ARROW KEYS The keys on a co^mpiiltr 
keyboard marhed with arrows. Used for 
moving the curfor across, or up and down 
th« V.D.U. screen. 

BASIC The most Widespread ccimpycef 
languaee. whicti is om of the ea^i^^i to 
learn and h used on all microc^mputefS. 
BUG A siang term g^ven to a mistaki m a 
computer program which prevents il work 
ing It can refer to a rfieehamcalH electrical 
01 r elfrctror^ic defect m a computir. 
CAPAOTOfl An electronic companent 
used in com putt rs 

CENTRAL PROCESSOR UNIT The pari 
qI the computer which carries out the 
arithmetic and logical pfocj^sse^ \mm^ 
times kn^iwn as ''number cmnching'l, 
tf^hich Lnfqrmaikon has iti go through. It also 
Pie reisers fmai control Over the phpical 
components of the computer system 
CHIP A tifty piece of silicon which holds all 
the components that make up a micro- 
prpcessar 

CHRI A Basic fyncti'dn which codes a 
compyter s giaph»c symbols It is fDlliMed 
by a number m brackets, eg CHflS 1661 
which rs the coded number of the sy^bot 
yQu want the computer to produce. 

COMPUTER LANGUAGES Languages 
are used to make the computer perform 
ope rat w>^ They coftsist of computer 
instructions or commandi. There are dif 
firftnt types ol languages for carrying out 
differs nf tasks, e.g. busmess. scienlEfic 
CURSOR A Miall square shaped mark 
which indicates wheft a chariicter will 
appear on the screen It eafi be maved 
around th^ screen using certain keys on 
(In keythoard 

DATA OUTPUT POBTTNs n the part in 
the ccmputer liom which toformalion tun 
be rptfitved 

DATA STATEMENT An instruction m a 
compirter language 

0£BilG The prm^ess ol lCK;«ting and cor 
reefing errors in a compiltr piof ram 

DKSITALANALOGUE CONVERTER A 
device to cor^vert information, stored m an 
analogue cc^mputer into digital form, so 
that cakulatiOf^s can be earthed out Most 
c^^mputers are digital Analogue cDmpitiers 
ire mainly used lor scientdic purposes. 

DIODE A devj^t thai allows electricity to 
flow in only Dne direction, 



DISC A magnetic st^^rage device tt can M 

either a hard or floppy disc Hard discs can 

uiuelly stare more inbrmation than floppy 

discs and are used with mainframe com^ 

puters 

DOLLAR SIGN S See "Stnng'^ 

EDIT Bear ranging data to be stored in the 

computer memory. 

EXPONEPITIATION A mathematical 
operation used to calculate powers ol 
numbers 

FORTRAN In a computer lar^guage writ 

ten in algebraic expressfon and arilhmetic 
statements U is thought to be a more 
precise language 

GOSUB A ftastc command instructing tht 
computer to go to a subroutine ir^ a compu- 
ter program 

GRAPHICS The name grven^ to pictorial 
representalion of data aui:h as plotted 
graphs, engineering drawing and. of 
course, computer games 

HARDWARE The generel term given to 
aO pieces of electronic ami m«ehftnieal 
devices which make up a computer syftem, 
I e the actual machines 

INPUT Information /data which is fed into 
the computer 

INTEGER A number which does not con- 
tain t decrma^ point, i.e. a whole number. 
K A kilobyte ol memory. 
LANGUAGE See "Computei Language^' 
LX D. (Liquid CrystalDiSplaytA display 
cDntaimng liquid crystals which light up 
when electricity touches them. Used in 
calculators and watches 

L.E.D. tLiflht Emitting DiCKkr) Provides 
a simpte display and consists of an electron 
tube which lights up when electricity is 
passed through it. Used as an all er native to 
liquid crystal displays 
UNE NUMBER Relers to the number 
assigned to a tine or row of characters 
contained in a computei progriim. 

LIST (ING) This means to pnnt a line lor 
each Item of a computer program You can 
either call «t up on the screen or, ff a prmter 
is atlacfmd to She computer, you can get a 
printout of the program you want to list. 
Useful to check programs 
LOAD Putting information from auiiiliary 
storage into internal storage of a computer. 
It can be either a complete program or any 
dole. When yau load a program you put the 
comtents of th^t program ^nto the compu- 
ter's memory Irom storage either on a disc 
or a cassette 

LOOP A fiasic function referring to the 
repeated execution of a series of instruc- 
tions lor a fitted numbet of times. 




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MACHINE CODE The l^rm utiid tO mfif 
to syniboli or numbflric ^$f igfiftd to parts of 
a mnchini It is i^e ^me as opsrition code 
vvhH^h i£ the symbol talking the cortipiiter 
which op^ralion to perform. When a pmt 
is written in machine code il mik^s %mrf- 
thing movt much in ore qmckly 
MAINFRAME COMPUTER The ^rgon 
vyord used lo dgscribt a v^ry larga ce>nipu- 

MEMOftV MAP A prmtoul provided to 

aid ifi pracessjiig scattired pfogrem frtg^ 

rrhenfs in ihe computer s memorv V(»u can 

also call up tt^e dele on tti« screen 

MICROCOMPUTER A tiny computer {as 

th^ name sy guests] consisting of hardware 

and ^ftware The itiajn processing blocks 

are made of aemicofiducior mtegratfld ttr 

cults 

MAICROPflOCESSOR Another Mme lor a 

chip, 

MINICOMPUTER A ^mail or medium 

£i/od LompiJter It has less memorY capac^ 

iry thtn mainframes but more than micros 

NUMERIC KEYPAD Ihm li the section 

of the computer s keyboard where the 

minttef keys are located 

OUTPUT The tnformatiOFt retrieved from a 

computer, either shown on a scroen or 

printed out ^i a printer attached in the 

computer 

PEEK A statement used in Basic which 

allows you to read the contents of a 

ipectfif d memory address 

PIXEL Tfie basic element of a TV piciure 

denved through various types ot scai^nmg 

processes and is used for ccimputer iman 

ipulation 

IK>KE An insiructiDn used m most ver 

sions of Basic allowmg yDu to store mte 

gmt in a specific ptace in mimory 

PRINT A Banc command which tells the 

tcm^um to perform a calculalion iti a 

program 

PROGRAM tCOMPUTER} A senes of 
instruiLlions fed into a ci^mputer whicih wilJ 
salve a pr^blfim or accomplish an qbieclivQ 

PSEUDO RANDOM NUMBERS These 
are numbers which aie not real random 
numbers but are cfcose onoyg^ to be y$ed 
for statistical testing. * 

RAM (Raridoiri Acceisi Mftinorv) 
This IS a memorv chip whtch you can ioiid 
programs and data to and from There are 
diflerenc sijred RAMs capable of siormQ: 
various amounts ol information 

READY The word which is shown on the 
screen indicating when tfie co minuter has 
loaded Susie and is ready for your lurthar 
insiriictions 



REAL NUMBER A f^umber wtiich con- 
tatns a decimal point 

RESISTOR An efectfonic component that 
opposes the flow of electrical current end 
is used to make up a micro pfocessor, 
RETURN A Basic function and ilio an 
important key w the computer keyboard 
When used in Basic it t% a statement which 
should always appear at the end of a 
subroutine Whnn the key on the keyboard 
IS pressed ix lelis thfl computer to carry out 
the instruction you have just §iven I he 
computer 

R.O.M. (Read Only Mernoryt A mtni- 
ory chip which can only be read from and 
not written mto 

ROUTINE A sal of coded computer 
instructions used for a particular function 
in a program 

RUN A Baste hjnclion anti mat ruction 
which tho programmer types in wf>en lie 
wants to execute a program. 
SEMICONDUCTOR Thii is materiel 
whcise elEcincity conduciivfty is befwfin 
metal and an insulator Many Cdmputeri 
now use semicontfuctor memory 

SOFTWARE Another nam« for computer 
programs tt cati also refer lo computer 
riocLrmentatmn 

STATEMENT An instruction in a compu 
ter prog ram 

STRING A connected sequence of charsc 
ters wards or -pfher elements usuilly sym 
bolis«d WPth the S Idollart $ign 

STRUCTURED PROGRAMMING A 
phrase used as shorthand for a ciiikection 
of techniques thought to make program 
mjng much more rigorous 

SUBROUTINE A computer progfam 

rouiine thai is translated separately 

SYNTAX The name used to refir to 
senteme structure rules of a programming 

(afigutge 

TRANSISTOR A vital component ol a 
microprocessor. In fkt microprocissofi 
contain many thOMsandi of them 

TRUTH VALUE Sae valye 

VALUE The numerical quantity of a data 
element and the (lumber assigned to a 
vifieble 

VARIABLE A symbol whose numeric 
value can be changed at all times It ts used 
when writing programs. 

V.D U. {Visual Oispley Unrt) This is a 
unit which looks hke a teJeviston screen, 
which information stored m tfie computer 
memory ti diiplayitf on. 

Z-80 A malte of microprocessor mucti used 
in microcomputers 



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TOtI Aim YOUBCinLDKEII 

Moz« and mem iehooli cnv buying AlOBU 
MoFfl and mora duldiim vnJi l*afTi on cm Atom 
You Cfin^v* dufii thai srtic tomikinty wfttli oEi 
Alom Ib ilw lum*. 




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Cli^J* N9. Ml 



THE ATARI.RANGE 




Kim ^FTWARE 



Missile Command 

Asteroids 

Space Invaders (RomJ 

Space Invaders (Cassette) 

Basket Ball 



£29.96 

£29.95 
£29.95 
£24.50 
£12.95 
£24.50 




Kim HARDWARE 

400 16K £345 

800 16K £645 

410 Recorder) £50 

810 Disk Drive £345 

80 Col, Printer £550 

Paddles Pair £12 

Joysticks Pair £12 

ATMU SOFTWARE TOM DTNACOMP 



Stud Poker 

Moon Probe 

Alpha Fighter 

Intruder Alert - 

Giant Staiom 

Monarch 

Crystals 

Dominoes 

Chomp-Reversi 

Management Simulator 



16K(C) £10.99 
16K(C) £9.99 
24K(C) £11.99 
16K(C) £15.99 
16K(C) £12.99 
16K(C} £10.99 
24K(C} C9.99 
24K(C) £15.99 
16K(C) £10.99 
24K(C) £15.99 




ATARI SOFTWARE FROM AOVENTURE 



Adventures t-12 
Star Trek 3.5 

Sunday Golf 
Angle Worms 
Mountain Shout 
Deflections 
Lunar Lander 
Galactic Empire 
Galactic Trilogy 



24K(C) £16.50 
24K{C) £16.50 
ISKtC) £12,50 
16K{CJ €12.50 

16K{C) £12.50 
16K(C) £12.50 
24K(C) £16.50 
24K(C) £16.50 
24K(C) £16.50 



We also carry a largfe range of software for TRS-80 and Apple 
computers send 50p for catalogues. 



(C) '= Cassette 



Trade enquiries for software welcome. 
Mail order available all prices include P & P 



All prices include VAT 



SPECIALISTS IN MICROCOMPUTER HARDWARE & SOFTWA. 



COMPUTERS UNITED 



119 John Bright Street, iirmingham B1 1BE. Phone 021-632 6458 



CltcI* Ho. m 



TAKE OUT A 
, SUBSCRIPTION 
TO THE MAGAZINE 
THAT MAKES 

ICOMPUTERS 
FUN 




- ^ ^nmDiil«f. Wl^«« ***** If^ 




" b'">9S me best - 
en[&fia»oment out ol i 

•om personal Sinciajr^ 
Claris, TaAdysVlCs 
HpDles and Pt^tj ^tght 
up to marnframe fBMs 
' '■«•> <ssuB IS packed ^vtth 

'^^^^•^'samesfisimgsfofyotj 

-onX'e'l'S ?^v^Srl?r '" '^^ ^ --P-'- ^-Pe. Each 



SUBSCRIPTIONORDERFORM 



and r -c^JlilJ^^^O^^ — l^J^' 
the ilems ihat mierlsi vou :>nt^^''^!® ^' '^« ^otrorr of 
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,ay in.Vd. youT computer, «• 



•D. p»ay »»"'<'«" 
j*ffy iii»»d» yo^T 

* will b« looking U. i;_t,na* lor ui to pnw • -»- 

^„^ho« to «nd in ^<'f\""t '^'liiting. that you P«»'^'\^":; 
,r" to 9** th. m«t out ol .\*^"' "'^"^u, potticulor mochioe . 
C oUr pagM which arei* t f -a;;"^/ , ^^o^nd pfobl-m. 
ad. look to t^ **«^ *7' ^„e lnt*«»l. you '^-n iry to 
hav« bollW ¥»u and H a gom 

Wove already toUoi* »« ^'*'* J,, ,qo ! '« •"" t*"V ^^^If.lJpc ^ 
*'a"„. n„. w. -op. r,"-? !;.roAp«TEH > VmL O GAMES, 



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IggQI ON 8AU NOVEMBER IBIH 




This may be the first Apple It game that i 

RASTER BLASTER for the Apple II and Apple II Plu 

pfay that it is sure to attract the attention of the I 

it right now for V( 



RASTER Bi 

Video Pinball for 
See next month's jssu< 



Appl« II it • rvQlsttrad trtdvintrk 



SUBSCRIPTION 

ORDER 

FORM 




^B Start m^ 






Video Gaff^es and confiriL.- 
send it lo ma yntii I cance< 
I understand ihai I may slop my subscnpiion 
at any time and you wril relund me the difference 
1 encfose a cheque/PO for £10 00 |U K|: Overseas 
£20 00 Twelve issues a year Cheques should be made 
pavable to Compuier & Video Games Lid 

■ lame . ^ 



Address, 



Signed 



.Dale. 



NOW PLEASE POST TO 

Compuier & Video Games Lid.. 

Subscription Department, Bretton Goyrt. Bfet!on. 

PeterlJOfOugh PE3 802 



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NEWSAGENT: 

ji Please reserve/deliver 
Computer & Video 

( Games to me every 

■ month, until 
further 





Na!i>e_ 



:^ess- 



k J Signed 



ARE YOU THE BEST 
ARCADE PLAYER 

MTHE WORLD? 

Fmd out by entering our great competition. Simply fill out 
this card and send it to Computer* Video Games ltd, 
3rd fioor. S Herbal Hill. London f CI R 5JB. 

Grtat prizes to be won . . Jul) details on page 20 



i would iii^e 10 enter The Be si Arcade Piayer in the 
iVoftd Competition 



Tin« machine t pJay on is called^ 

and IS manufactured by^^ 

My highest score is 



^hich 1 scored on (daleh 



manager 0' 
'& was a witness. 
>;ynature of witness. 



jb where I achieved this 



Narne and address ot arcade/pub 




M POWER 

(ed in a persottol computer 



I plui many, 



lEinuijJeLimpi 
I nothing aut In 
Pyct^«<rf«wilh 



YOUANDYOUIICHlLDIIfN 

Man OHJ mam adiDoli cn« buying Afomm 
Mem <md mom dilkhvi wiU Inzn « on Apcm 
Youoangim llMinlfadi MCtin bsailAaDif wilkczn 
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iiNUf^in lihJ! ■well 
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Signomr* 
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IMKMtCFVATNftiL&IGQSa | 



1w iw + .K kAM 



Cirri* N^. ^00 



Continued overteat 



SUPERMARKET 



COMPUt£RS 

CALCUIATOBS 

COMPUTER GAMES 

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EXTRA LOW PniC^' 



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T«t ' 01 4*^(| c^R?^ 



MOUNTAINCIENE 

22 Cowper Str««t 
London EC2 



« COMPUTCJ1 fr VIDEO GAMES 



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MACHINE i 
tf^ symbols or 
a machine It 
which IS thfl 
which operal 
IS ^ritl^n in 
Ihing move n 

MAINFRAh 
MDid ysed to 

MEMOftV ( 

aid in prqce^ 
nt«nts in the 

el so cal-l up t 

MKROCCM 

the fwm sug 
and Mftwarfl 
are made of 
cuiis 

MICROPRO 
cNp 

MINICOMP 
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ity than mam 

PilUMERIC 

Of the comi 
numtier leys| 

OUTPUTTIl 

ccimput^c. Bi| 
pnnltd out 
^omputir 

PEBC A ^ia| 
aUows you 
specified mtij 
PIXEL The 

derived tNon 
pfocBSsts ar 

POKE An iir 
sions of Basi 
gits in a SF 
PfUNTA 
c0ifi|Hirer toj 
program 

PROGRAM I 

insirytlions i\ 
solv^ a probi<i 

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^f^ numbers! 
nymtrars but! 
for stalisticsll 

BiArM- fRi 
This IS a mer 
programs ant 
different sizt 
various amoi 

READY Th&l 
scr««n indtcij 
lOAded Basic I 
instructions 



O NEWSAGENT 




Pr|>.. 



5werthe following questions 



1 . Do you prefer games which rely on (please ring}: 
Speed and reach on; Attack; Strategy: Delerice; 
01 her (please n a meK 



2, How do you know when you have lound a good 
video game? 

3. How often do you pley each week, and wfiere^ 



4. If you could add one fealure to your favourite game, 
what would il be*^ 



5- Do you read the mstruc lions on tiow to play a game 
before you try it? 



My name IS 
Address ,^_ 



TeJ: 



-Signature. 



NOW PLEASE POST TO: 

Computer & Video Games Ltd, 

3rd. floor. 6 Herbal Hill. London ECIR 5JB 

TO ARRIVE NOT LATER'*'" ""